How Turfgrass Breeding Changed the Sod Industry Forever

The Grass Beneath Your Feet Has a Story Most People Have Never Heard

There is a man most homeowners have never heard of who is directly responsible for the lawn they are standing on. His name was Dr. C. Reed Funk. Born in 1928, he spent more than four decades at Rutgers University in New Brunswick, New Jersey, breeding grass. Not farming it. Not mowing it. Breeding it — the way other scientists breed disease-resistant wheat or drought-tolerant corn. He crossed individual grass plants by hand, evaluated tens of thousands of offspring, and over the course of his career developed or contributed to hundreds of cool-season turfgrass cultivars. When he died in October of 2012 at the age of 84, he left behind a legacy that touches virtually every lawn, athletic field, and golf course in the northern half of the United States.

If you have a lawn anywhere in the cool-season zone, there is a very good chance that the grass growing on it traces back to his work.

But Funk did not work alone, and the story does not start with him. The transformation of the sod industry — from rough-cut strips of whatever happened to be growing in a field to the precision-grown, genetically optimized product you can order by the pallet today — is a story that spans nearly a century. It involves a handful of obsessive researchers, a few accidental discoveries, a government-funded testing program, and a single ugly grass that nobody wanted until someone figured out how to make it beautiful.

And it is not just a northern story. A thousand miles south of Rutgers, in the small town of Tifton, Georgia, another scientist — Dr. Glenn Burton — was doing the same thing with bermudagrass, transforming one of the South's worst weeds into the foundation of the warm-season turf industry. Burton worked his entire 61-year career at the University of Georgia's Coastal Plain Experiment Station. He received the National Medal of Science from President Reagan in 1983. He died in 2005 at the age of 95, having shaped the grass on more golf courses, stadiums, and lawns across the southern United States than any other individual in history.

These two men — Funk in New Jersey, Burton in Georgia — bookend the story of modern turfgrass breeding. Between them, and with the help of a network of university researchers, government programs, and seed companies, they built the industry that puts sod on your lawn today.

This is that story.

Chapter 1: What Grass Used to Be

To understand what turfgrass breeding changed, you have to understand what existed before it.

For most of the 20th century, a lawn was not a designed product. It was whatever grew. If you lived in the North and wanted a nice lawn in the 1940s or 1950s, your options were limited to a small number of grass species, and within those species, the available varieties were essentially unimproved — meaning no one had selectively bred them for any particular trait. You bought a bag of seed from the hardware store, spread it on dirt, and hoped for the best.

The dominant species for northern lawns was Kentucky bluegrass. It was attractive — fine-textured, dense, that classic deep green color — but it had serious limitations. It was slow to germinate, often taking two to three weeks to show any growth. It was susceptible to a long list of fungal diseases, including leaf spot, dollar spot, stripe smut, and summer patch. It demanded consistent moisture and wilted quickly during dry spells. And it was expensive to maintain, requiring regular fertilization to keep its color and density. For a deeper look at how this species went from an anonymous European import to the defining grass of the American lawn, see our full article on the origin and rise of Kentucky bluegrass.

The other common cool-season option was tall fescue, but nobody considered it a lawn grass. The variety that dominated the market was called Kentucky 31 — or K-31 — and it was a pasture grass, plain and simple. It was released by the University of Kentucky in 1943 after being discovered growing on a farm in Menifee County, Kentucky, in 1931. The farmer, a man named William Suiter, had a hillside meadow of unusually hardy fescue that had survived everything the Kentucky climate could throw at it. E.N. Fergus, a professor at the University of Kentucky, recognized its toughness, collected seed, and eventually developed it into a named release.

K-31 was a workhorse. It could handle heat, drought, poor soil, and heavy grazing. It was used extensively for roadside stabilization, cattle pastures, and erosion control. But as a lawn grass, it was terrible. The blades were wide and coarse — you could practically see the individual leaf veins from a standing position. It grew in clumps rather than spreading to fill in bare spots. It was the grass equivalent of a work boot: functional, durable, and ugly.

In the South, the situation was different but no less frustrating. Bermudagrass — Cynodon dactylon — grew everywhere, but most of it was common bermuda, a highly variable species that produced thin, weedy, uneven turf. It was considered one of the South's worst weeds by crop farmers because it would invade their fields and was nearly impossible to eradicate. Golf courses in the South were in particularly bad shape. Before the 1950s, many courses in the Southeast had putting surfaces made of compacted sand, sometimes painted green to simulate the look of actual turf. There was simply no bermudagrass variety fine enough or dense enough to produce a real putting surface.

So for decades, homeowners and turf managers across the country were stuck with grasses that were either fragile and high-maintenance, tough but ugly, or — in the South — inconsistent weeds. There was no middle ground. Not yet.

Chapter 2: The Unlikely Origins of a Turfgrass Revolution

The cool-season revolution did not begin in a laboratory. It began in a parking lot.

In the early 1960s, Dr. C. Reed Funk was a young turfgrass researcher who had recently joined the Rutgers University faculty. He was the first full-time cool-season turfgrass breeder at any university in the United States — a fact that says as much about the state of the field at the time as it does about Funk's ambition. He had been trained in plant breeding and genetics, and he was interested in improving the grasses used on lawns, athletic fields, and golf courses.

One day, while walking through a parking lot on the Rutgers campus, he noticed something unusual.

Growing in the cracks of the pavement — in the thin strips of soil between the asphalt and the curb — was a patch of tall fescue that looked different from any tall fescue he had seen before. It was finer-textured. The blades were narrower. The growth habit was denser. It did not have the wide, coarse, clumpy look of K-31. And it was thriving in conditions that would kill most turfgrasses: compacted soil, limited water, full sun exposure, and constant foot traffic.

Funk collected seed from that plant. He did the same from other unusual tall fescue plants he found growing in old lawns, cemeteries, parks, and roadsides across the Northeast. Many of these were plants that had been growing in the same spot for decades, slowly adapting to their local conditions through natural selection. The ones that survived were, by definition, the toughest and most resilient individuals in the population.

This is a key point that most people miss about turfgrass breeding: the raw material did not come from exotic locations or high-tech gene editing. It came from old parking lots, neglected cemeteries, and overgrown parks. The genetic potential was already out there, hiding in plain sight. What Funk did was recognize it, collect it, and begin the long process of unlocking it through controlled crosses and selection.

He brought those collections back to Rutgers and its 200-acre Plant Science Research and Extension Farm — known as the Adelphia Farm — which the university had purchased in 1962 to support its new breeding program. There, he began crossing his collected plants — pollinating one plant with pollen from another, harvesting the seed, growing out the offspring, and evaluating them for the traits he wanted. Finer leaf texture. Denser growth. Darker color. Disease resistance. Heat tolerance. Drought tolerance. The ability to recover from mowing.

Each generation took a full growing season to evaluate. A single cross might produce thousands of seedlings, and each one had to be individually assessed. The best performers — maybe five or ten out of a thousand — would be selected, crossed again, and the process repeated. It was not glamorous work. It was repetitive, meticulous, and slow.

But Funk was patient, and he was working toward something no one had achieved before: a tall fescue that a homeowner would actually want on their lawn.

Chapter 3: Down South — Glenn Burton and the Bermudagrass Problem

While Funk was starting his career in New Jersey, a man in south Georgia was already deep into his own grass revolution — one that had been underway since before World War II.

Dr. Glenn W. Burton was born in 1910 on a farm in Clatonia, Nebraska. He graduated from the University of Nebraska in 1932 and earned his Ph.D. in agronomy from Rutgers University in 1936 — the same school where Funk would later build his program. After graduation, Burton moved to Tifton, Georgia, to take a position as a geneticist with the USDA Agricultural Research Service at the Coastal Plain Experiment Station. He would stay there for 61 years.

Burton arrived in Tifton to find a cattle industry starved for quality forage. Bermudagrass grew everywhere, but it was thin, weedy, and low-yielding. His first major achievement was developing Coastal bermudagrass, released in 1943, which doubled forage production across the South and at one point covered 10 million acres of southern pastures. It was a breakthrough for agriculture, but Burton was just getting started.

In 1946, the U.S. Golf Association came calling. Dr. Fred Grau, director of the USGA Green Section, visited Burton in Tifton and described the sorry state of southern golf courses. He offered Burton $500 a year to start researching better turfgrasses. Burton agreed, and "breeding of better turfgrasses" was added to his job description.

The challenge was immense. Common bermudagrass was too variable and coarse for quality turf. Burton's approach was to cross different bermudagrass species — specifically the common bermuda (Cynodon dactylon) and African bermuda (Cynodon transvaalensis) — to create hybrids that combined the toughness of one with the fine texture of the other.

His first turf hybrid, Tiflawn, was released in 1952. It was the best bermudagrass available for football fields and playgrounds, but it was still too coarse for golf greens. In 1956, he released Tifgreen (Tifton 328), a sterile triploid hybrid that was fine-textured enough to produce a real putting surface. For the first time, southern golf courses could have greens made of actual grass instead of painted sand.

Then came Tifway.

In 1954, Burton discovered an unusual bermudagrass in a seed lot from Johannesburg, South Africa. It was a sterile triploid hybrid — an accidental cross between African and common bermudagrass — with fine texture, dense growth, and exceptional durability. He selected it, tested it, and released it as Tifton 419, commercially known as Tifway, in 1960.

Tifway changed everything in the warm-season world. It was explicitly designed for golf course fairways, but it quickly proved itself on athletic fields, commercial landscapes, and residential lawns across the entire southern United States. It was dense, fine-bladed, dark green, and incredibly tough. It recovered from damage faster than any bermudagrass before it. It could be mowed low for golf or maintained at lawn height for homeowners. It tolerated drought, heat, and heavy foot traffic.

Tifway became the standard. For more than six decades, it has graced more golf courses, stadiums, and lawns than any other warm-season grass variety in history. The grass on UGA's Sanford Stadium — along with a majority of other SEC stadiums, World Cup pitches, and Olympic venues — is Tifway 419.

The "Tif" prefix, which appears on dozens of bermudagrass cultivars, comes from the town of Tifton itself. It has become a badge of origin, indicating that a variety was developed at the Georgia station. And the man who started it all — Glenn Burton, a Nebraska farm boy with a Rutgers doctorate — was already in his 50s when Tifway was released. He kept working for another 37 years.

Chapter 4: Rebel — the Cool-season Shot Across the Bow

Back in New Jersey, Funk's tall fescue program was producing results.

The first commercially significant turf-type tall fescue to come out of his program was a cultivar called Rebel, released in 1980.

Rebel was a revelation. Compared to K-31, it had noticeably finer leaf blades, a darker green color, and a much denser growth habit. It formed a thick, uniform stand instead of growing in clumps. It still had the deep root system and drought tolerance that made tall fescue tough, but it looked like a completely different grass. For the full story of how tall fescue evolved from a coarse pasture grass into a premium lawn option — and how it compares to Kentucky bluegrass today — see our complete guide to tall fescue sod.

The sod industry took notice immediately. Here was a grass that could survive a July drought without supplemental irrigation, handle full sun and heavy foot traffic, resist most common fungal diseases, and still look attractive enough to sell to a homeowner who cared about how their lawn looked. It was not quite as fine-textured as Kentucky bluegrass — nothing was, at that point — but it was close enough that most people could not tell the difference from the street.

Rebel opened the door, but it was just the beginning. Through the 1980s and 1990s, Funk and his team at Rutgers — along with breeders at other programs — released a steady stream of improved turf-type tall fescue cultivars. Each generation was a step forward. Finer blades. Better color. Improved disease resistance. Greater density.

Some of the notable early releases included Falcon, Olympic, Mustang, and Apache. Each one addressed a specific limitation of its predecessors. Falcon improved on Rebel's disease resistance. Olympic offered better performance under low mowing heights, making it suitable for athletic fields. Mustang had improved shade tolerance. Apache pushed the boundaries of leaf fineness even further.

By the mid-1990s, the best turf-type tall fescues were virtually indistinguishable from Kentucky bluegrass to the untrained eye. The transformation was complete — at least visually. A grass that had been dismissed as an ugly pasture species just 15 years earlier was now the fastest-growing segment of the sod market in the Northeast and Mid-Atlantic.

Chapter 5: The Fungus Inside the Grass

While Funk was transforming tall fescue from a pasture grass into a lawn grass, he stumbled onto something else — something that would turn out to be one of the most important discoveries in turfgrass history. It had nothing to do with leaf texture or color. It had to do with a fungus.

In the late 1970s and early 1980s, researchers began noticing that certain grass plants seemed to be naturally resistant to insect feeding. Chinch bugs, sod webworms, billbugs, and armyworms — all serious turf pests — would devastate one stand of grass while leaving a neighboring stand virtually untouched. The resistant plants were not a different species. They were not treated with insecticide. Something else was going on.

The answer turned out to be endophytes — fungi that live inside the plant tissue itself, specifically in the stems, leaf sheaths, and seeds. These fungi do not harm the grass. In fact, they have a mutualistic relationship with it. The grass provides the fungus with a home and nutrients. In return, the fungus produces alkaloid compounds — naturally occurring chemicals that are toxic or repellent to a wide range of surface-feeding insects.

The key discovery was that these endophytes could be passed from one generation to the next through the seed. A grass plant infected with the right endophyte strain would produce seed that was also infected, and the seedlings grown from that seed would carry the same insect resistance. It was a built-in, self-perpetuating defense system — no spraying required.

Funk and other researchers recognized the enormous implications. If they could identify grass cultivars that naturally harbored high levels of beneficial endophytes, and then breed those cultivars for the turf traits they wanted — fine texture, color, density, disease resistance — they could produce a grass that was both beautiful and naturally insect-resistant.

That is exactly what they did. By the mid-1980s, Rutgers was actively screening breeding lines for endophyte presence and selecting for high endophyte levels alongside traditional turf quality traits. The result was a new generation of tall fescue and perennial ryegrass cultivars that came with insect resistance built into their DNA.

For sod farmers, this was a practical breakthrough. Insect damage was a constant threat to sod production — a bad chinch bug infestation could destroy an entire field. Growing endophyte-enhanced cultivars reduced that risk significantly without adding chemical input costs. For homeowners, it meant a lawn that fought off pests on its own, reducing the need for insecticide applications.

There was one important caveat: the endophyte alkaloids that repelled insects could also be toxic to livestock. Cattle, horses, and sheep grazing on endophyte-infected tall fescue could develop a condition called fescue toxicosis — reduced weight gain, heat intolerance, and poor circulation. This was a serious issue for the agricultural side of tall fescue, but it was irrelevant for turf. Nobody was grazing cattle on their front lawn. For the sod industry, endophyte-enhanced grasses were pure upside.

Today, virtually all high-quality tall fescue and perennial ryegrass seed sold for turf use carries enhanced endophyte levels. Seed tags will often list endophyte percentage — a number that would have meant nothing to anyone 40 years ago but now represents one of the most effective natural pest management tools in the turf industry.

Chapter 6: Perennial Ryegrass Gets Its Moment

Tall fescue was not the only species that Funk and his contemporaries transformed. Perennial ryegrass went through its own revolution, and in some ways, its story is even more dramatic.

Before the breeding era, perennial ryegrass was considered a temporary grass. It germinated fast — often in five to seven days, compared to two to three weeks for Kentucky bluegrass — which made it useful as a quick-cover nurse grass. You would seed it along with bluegrass to get something green on the ground quickly while the slower bluegrass established underneath. But the ryegrass itself was not expected to last. Older varieties were coarse, disease-prone, and had poor heat and cold tolerance. In the Northeast, a harsh winter could wipe out an entire stand of common perennial ryegrass.

Funk and his team applied the same approach to perennial ryegrass that they had used on tall fescue. They collected plants from old stands that had survived for decades in tough conditions. They crossed the best performers. They selected for finer texture, darker color, improved density, better mowing tolerance, and — critically — improved winter hardiness and disease resistance.

The results were transformative. Manhattan perennial ryegrass, released by Rutgers in 1967, was among the first improved perennial ryegrasses — and it is considered a landmark cultivar in the history of turfgrass breeding. Manhattan was finer-textured than common ryegrass, had better color, and was significantly more disease-resistant. It was followed by Manhattan II, Manhattan 3, and Manhattan 5 — each one a measurable improvement over the last.

Other programs contributed landmark cultivars as well. Palmer, developed by Dr. William Meyer (who first connected with Funk in the early 1970s while working as research director for Warrens Turf Nursery in Illinois, and later became his close collaborator), was released in 1980 and became one of the most widely used perennial ryegrasses in the country. Prelude, Yorktown, and Citation were other early improved varieties that pushed the species forward.

The perennial ryegrass story also intersected with the endophyte story. Ryegrass turned out to be an excellent host for beneficial endophytes, and breeders were able to develop cultivars with high endophyte levels that provided strong insect resistance alongside improved turf quality.

By the 1990s, improved perennial ryegrass had gone from a throwaway nurse grass to a premium turf species in its own right. It became a staple of athletic field mixes, golf course overseeding programs, and high-end residential sod blends. Its fast germination rate — once seen as its only real asset — was now paired with fine texture, deep color, disease resistance, and winter hardiness that would have been unthinkable a generation earlier.

Chapter 7: Kentucky Bluegrass Fights Back

The rise of turf-type tall fescue and improved perennial ryegrass put pressure on Kentucky bluegrass — and bluegrass breeders responded.

For decades, bluegrass had been the king of northern lawns by default. It was the grass that homeowners aspired to, the species that defined what a lawn was supposed to look like. But its weaknesses were real, and as improved tall fescues and ryegrasses began offering comparable appearance with better performance, bluegrass risked being left behind.

One of the earliest signs that bluegrass could be improved through deliberate selection came not from Funk's program, but from a golf course putting green in Ardmore, Pennsylvania. In the late 1930s, a USDA researcher named Dr. H.B. Musser noticed that a single patch of bluegrass on the 17th fairway of Merion Golf Club was outperforming everything around it — denser, darker, more resistant to leaf spot disease. He collected vegetative samples, and after years of testing, released that selection in 1947 as Merion Kentucky bluegrass. It was the first named, improved Kentucky bluegrass cultivar, and it proved that the species held untapped genetic potential. For the full history of that accidental discovery and its impact on the industry, see our article on Merion Kentucky bluegrass.

Breeders at Rutgers, Penn State, the University of Minnesota, and other programs accelerated their bluegrass improvement work in the decades that followed. The challenge with Kentucky bluegrass was different from tall fescue. Bluegrass reproduces primarily through apomixis — a form of asexual seed production where the offspring are genetically identical to the mother plant. This makes traditional cross-pollination breeding more difficult than with other grass species, because most of the seed a bluegrass plant produces is essentially a clone of itself.

Funk made a critical breakthrough here as well. He developed the first successful method of breeding Kentucky bluegrass through intraspecific hybridization — finding ways to force true sexual crosses between bluegrass plants and selecting from the resulting offspring. This opened the door to the kind of systematic improvement that had already transformed tall fescue and ryegrass.

Breeders also collected wild bluegrass ecotypes from across the world — plants that had adapted to specific local conditions over centuries — and used those as breeding material.

The results, over time, were significant. Modern Kentucky bluegrass cultivars bear little resemblance to the common bluegrass of the 1950s. Adelphi and America were early landmark cultivars developed at the Rutgers Adelphia Farm. Midnight, also developed through the Rutgers program in the 1980s, set a new standard for dark green color that became the benchmark for the industry — its deep blue-green pigmentation was so distinctive that it redefined what homeowners expected a premium lawn to look like. We wrote an in-depth profile of Midnight Kentucky bluegrass covering its breeding, characteristics, and why it remains a standard sod component decades later. Award, Baron, and Touchdown were early improved varieties that offered better disease resistance. More recent releases like Bewitched, Mazama, and Prosperity have pushed the boundaries even further, offering improved drought tolerance, faster establishment, better heat performance, and resistance to specific diseases like summer patch and necrotic ring spot that plagued older varieties.

One of the most important bluegrass breeding achievements was the development of compact-type cultivars — varieties with a lower, denser growth habit that required less frequent mowing and produced a tighter, more uniform turf surface. These compact types became the backbone of premium bluegrass sod production, offering the fine texture and color that homeowners loved but with better density and lower maintenance requirements than the older, more upright-growing varieties.

The competition between species pushed everyone forward. Tall fescue got finer. Ryegrass got tougher. Bluegrass got more resilient. The entire cool-season turfgrass market was elevated by the breeding work happening at a handful of university programs, with Rutgers at the center of it.

Chapter 8: The Southern Renaissance — from Tifway to TifTuf

While the cool-season world was being remade by Funk and his colleagues in New Jersey, the warm-season world kept evolving in Georgia.

Glenn Burton had established the foundation with Tifway in 1960, but the Tifton program did not stop there. Burton continued working — into his 80s and beyond — and a new generation of scientists joined him to push bermudagrass breeding into new territory.

Dr. Wayne Hanna arrived at the Tifton station in 1971, joining the USDA Agricultural Research Service in the same cooperative role that Burton had held. Hanna would spend decades working alongside Burton and eventually become the lead turfgrass breeder at Tifton. Where Burton had solved the fundamental problem of creating fine-textured hybrid bermudagrass, Hanna turned his attention to the next frontier: water.

In 1992, Hanna bred a new bermudagrass hybrid and gave it the experimental designation DT-1. It was one of 27,700 genotypes in his program. In 1999, he planted 90 of the most promising genotypes under a rainout shelter and subjected them to deficit irrigation through 2001. Under sustained drought stress, DT-1 maintained its quality and green color longer than anything else in the trial. It did not just survive drought — it used less water. Soil moisture probes showed that DT-1 plots consistently retained more moisture than plots planted with other varieties, suggesting the grass itself was consuming less water through some kind of physiological mechanism.

The testing continued for years. Dr. Brian Schwartz, who took over leadership of UGA's turfgrass program from Hanna in 2009, subjected DT-1 to rigorous scientific evaluation across multiple states. In 2013, it was entered into the NTEP bermudagrass trials at 20 locations nationwide. The results were overwhelming. DT-1 scored the highest quality ratings at trial sites in North Carolina, Florida, Mississippi, Tennessee, Texas, Oklahoma, and California. It used 38 percent less water than Tifway while retaining 95 percent more green leaf tissue during drought stress.

In 2016, DT-1 was officially released as TifTuf — the latest in the long line of Tifton cultivars, and the one with more supporting research data than any bermudagrass ever released from the program. Nearly 25 years had passed between Hanna's initial cross and the commercial release. That is the timeline of turfgrass breeding. That is what patience looks like.

TifTuf hit the market in 2017 and is already replacing Tifway as the standard bermudagrass for lawns, golf courses, and sports fields across the South. It can now be found on the lawn in front of the Sydney Opera House in Australia, the great lawn at the Atlanta Botanical Garden, and across UGA's North Campus. It represents a direct line of institutional knowledge stretching back to 1936, when a young Glenn Burton first arrived in Tifton and decided to start working with grass.

Chapter 9: Zoysiagrass — the Quiet Third Option

While bermudagrass dominated the South and cool-season grasses held the North, a third player was quietly building its case in the transition zone — that unpredictable band stretching roughly from Virginia through Tennessee, Missouri, and Kansas where neither cool-season nor warm-season grasses are fully comfortable.

Zoysiagrass, native to East Asia and the Pacific Islands, had been in the United States since the late 1800s. It offered a unique combination of traits: fine texture, dense growth, excellent drought tolerance, low fertilizer requirements, and the ability to handle both heat and moderate cold. But it had serious drawbacks. It was painfully slow to establish. It went dormant and turned brown earlier in fall and later to green up in spring than bermudagrass. And for decades, there were very few improved cultivars available.

The first major zoysiagrass release was Meyer (Z-52), developed by Dr. Ian Forbes at the USDA and released in 1951. Meyer became the standard for decades — the zoysiagrass that homeowners knew, often marketed in magazine ads as the "miracle grass" that would create a carpet-like lawn. And Meyer was indeed excellent in many ways: fine-textured, dense, winter-hardy, and drought-tolerant. But it was exceedingly slow to establish — often taking two to three full growing seasons from plugs or sod — and it was susceptible to billbugs and large patch disease.

Forbes also released Emerald zoysiagrass in the 1950s, a hybrid with even finer texture than Meyer, developed at the Tifton station in Georgia. Emerald looked beautiful but had less cold tolerance and produced almost no viable seed, meaning it could only be established vegetatively.

For decades, Meyer and Emerald were essentially the only game in town. The zoysiagrass market was limited by this lack of variety.

That began to change in the 1990s and 2000s. At the USDA research station in Beltsville, Maryland, researcher Jack Murray — the same Jack Murray who would help lay the groundwork for the NTEP — had collected zoysiagrass selections from East Asia, including plants from Kobe, Japan. From those collections, David Doguet, a turfgrass researcher in Poteet, Texas, discovered a single exceptional plant that he cloned and developed into a variety called Zeon. Zeon was a fine-textured zoysiagrass with improved shade tolerance, reduced thatch production, and a faster rate of spread than older varieties. It became the number one choice for zoysiagrass golf course fairways and established itself as a premium residential lawn grass.

At Texas A&M, researchers developed Palisades in 1996 — a coarser-textured zoysiagrass with excellent drought tolerance and fast establishment. Cavalier and Zorro, also from Texas A&M, offered fine texture for golf course applications. The University of Florida released CitraZoy in 2019 with the best winter color retention of any zoysiagrass on the market.

Zenith, introduced commercially in the 1990s, represented a different kind of breakthrough: it was a zoysiagrass that could be established from seed. For decades, the inability to seed zoysiagrass had been its biggest limitation. Zenith, developed through the work of Jack Murray at the USDA and produced commercially by Patten Seed Company, made zoysiagrass accessible to homeowners who did not want to pay for sod or wait years for plugs to fill in.

Today, nearly 50 improved zoysiagrass cultivars have been developed. The species has carved out a significant and growing niche, particularly in the transition zone where homeowners want a grass that can handle both summer heat and winter cold with minimal inputs. It is no longer the oddball third option — it is a serious contender with cultivars tailored for everything from golf course putting greens to low-maintenance residential lawns.

Chapter 10: The NTEP — Bringing Order to the Boom

By the early 1980s, the turfgrass breeding boom — in both cool-season and warm-season grasses — had created a new problem: there were too many cultivars, and no standardized way to compare them.

Seed companies were releasing new varieties every year, each one claiming to be an improvement over the last. Sod farmers, landscapers, and homeowners had no independent, reliable way to evaluate those claims. Marketing copy said one thing. Field performance sometimes said another.

In 1980, the National Turfgrass Evaluation Program — the NTEP — was established. The groundwork was laid by J.J. "Jack" Murray, a USDA turfgrass researcher at the Beltsville Agricultural Research Center in Maryland — the same Jack Murray whose zoysiagrass collections from Japan would later produce cultivars like Zeon. Murray, along with a group of fellow scientists, recognized that the industry needed a standardized, independent testing system. The inaugural trials began in 1980 under the sponsorship of the USDA Agricultural Research Service and the National Turfgrass Federation.

Kevin Morris, a young researcher who joined the USDA facility in Beltsville in 1981, was hired by Murray to handle data and trial logistics. Morris learned the program from the ground up, eventually ascending to Executive Director in 1998 — a position he still holds today, overseeing trials at more than 250 locations across 35 states.

The concept behind the NTEP is straightforward: create a network of trial sites across the country where new turfgrass cultivars can be grown side by side under standardized conditions and evaluated over multiple years by trained researchers. The trials are rigorous. New entries are planted at dozens of sites spanning different climates, soil types, and management levels. They are evaluated for turf quality, color, density, leaf texture, disease resistance, drought tolerance, winter hardiness, and other traits. The data is compiled into publicly available reports that anyone can access.

For the first time, a sod farmer could look at NTEP data from trial sites in their region and see exactly how a new tall fescue cultivar performed compared to established varieties over a three- to five-year period. They could compare disease resistance scores, drought tolerance ratings, and overall turf quality numbers. The guesswork was gone.

The NTEP also created accountability for breeders and seed companies. A cultivar that was marketed heavily but performed poorly in the trials would be exposed by the data. Conversely, a cultivar from a smaller breeding program that performed exceptionally well would gain visibility it might never have received through marketing alone.

TifTuf's story illustrates the NTEP's importance perfectly. When it was entered into the 2013 NTEP bermudagrass trials, it was tested at 20 locations nationwide — the first nationwide trial of its kind ever conducted on bermudagrass. The data from those trials provided the independent validation that gave sod producers and turf managers the confidence to adopt it. Without the NTEP, TifTuf's 38 percent water savings claim would have been just another piece of marketing copy. With the NTEP, it was science.

Over the decades since its founding, the NTEP has evaluated thousands of cultivars across every major turfgrass species — bermudagrass, zoysiagrass, tall fescue, Kentucky bluegrass, perennial ryegrass, fine fescue, and others. Its data has become the foundation on which sod farmers, turf managers, and informed homeowners make cultivar selection decisions. It is, in many ways, the unsung infrastructure of the modern turfgrass industry — not as dramatic as the breeding breakthroughs themselves, but essential to making sure those breakthroughs actually reached the people who needed them.

Chapter 11: The Art and Science of Blending

One of the most important practical developments to come out of the breeding era was not a single cultivar — it was the realization that mixing cultivars together produced a better product than any single variety could deliver on its own.

In the early days of sod production, a field was typically planted with one variety. A farm would seed an entire block with a single Kentucky bluegrass cultivar, grow it out, harvest it, and sell it. The problem with this approach is the same problem that plagues any monoculture in agriculture: vulnerability. If the one variety you planted happened to be susceptible to a particular strain of leaf spot or dollar spot, and that disease showed up, you could lose the entire field. There was no genetic backup plan.

Turfgrass breeders understood this intuitively, but it was the accumulation of breeding work through the 1980s and 1990s that made blending truly viable. When there were only a handful of improved cultivars available, the options for blending were limited. But as programs like Rutgers, Penn State, and Oregon State released dozens of improved varieties — each with slightly different strengths — the blending concept became practical.

A modern sod blend is not random. It is engineered. A typical premium Kentucky bluegrass sod might contain three or four cultivars selected to complement each other. One might be chosen for its exceptional dark color. Another for its resistance to summer patch. A third for its drought tolerance. A fourth for its ability to perform well in partial shade. Planted together, they form a turf stand that can handle a much wider range of stresses than any one of them could alone.

The same principle applies to mixes — combinations of different species rather than different cultivars within one species. A common residential sod mix in the northern half of the country might contain Kentucky bluegrass for its fine texture and spreading ability, perennial ryegrass for its fast establishment and wear tolerance, and fine fescue for its shade tolerance and low fertility requirements. Each species covers the weaknesses of the others. For homeowners along the Northeast coast dealing with salt spray, sandy soils, and wind exposure, selecting the right blend is especially critical — we break down the best options in our guide to sod varieties for coastal Northeast lawns.

The science behind blend and mix formulation has become increasingly sophisticated. Seed companies and sod farms now use NTEP data, regional disease pressure histories, and site-specific soil and climate information to formulate blends targeted to specific markets. A sod blend designed for a coastal property — where salt spray, sandy soils, and wind exposure are factors — might look very different from a blend designed for the heavy clay soils and sheltered landscapes of the Midwest. A blend formulated for the transition zone, where cool-season and warm-season grasses overlap, faces challenges that a blend designed for northern Minnesota does not.

This level of precision would have been impossible without the decades of breeding and testing that preceded it. You cannot build a targeted blend if you do not have cultivars with defined, reliable trait profiles to work with. The blending revolution was built on the backs of every breeder who spent years selecting for one specific trait in one specific grass.

Chapter 12: The Low-input Movement

In the first few decades of the turfgrass breeding boom, the driving question was straightforward: how do we make grass look better? Finer blades. Darker color. Thicker density. The assumption was that lawns would be maintained at a high level — regular mowing, consistent irrigation, scheduled fertilization, and chemical pest and disease control as needed.

Starting in the late 1990s and accelerating through the 2000s and 2010s, that assumption began to shift. Water restrictions became more common across the country. Municipalities began regulating or banning certain lawn care chemicals. Homeowners started questioning whether a lawn needed to consume as many resources as the industry had traditionally assumed. Environmental organizations pointed to the cumulative impact of millions of residential lawns on water usage, chemical runoff, and biodiversity.

Breeders responded — not by abandoning the gains they had made in appearance and performance, but by adding a new set of priorities to the breeding equation. The new question became: how do we make grass that looks good and performs well with fewer inputs?

In the warm-season world, TifTuf was the flagship answer — a bermudagrass that delivered premium appearance with 38 percent less water consumption. In the cool-season world, the answer came from an unlikely group of species.

Fine fescues became central to the low-input movement. Species like creeping red fescue, chewings fescue, hard fescue, and sheep fescue had always been known for their ability to survive on very little. They tolerated poor soils, low fertility, minimal irrigation, and infrequent mowing. But older varieties were often thin, wispy, and pale — acceptable for a roadside or a utility area, but not for a lawn where appearance mattered.

Breeding programs — including significant work at Rutgers, the University of Rhode Island, and the University of Minnesota — began improving fine fescues with the same rigor that had been applied to tall fescue and bluegrass. The results were cultivars with better color, improved density, enhanced disease resistance, and stronger performance under real-world lawn conditions, all while retaining the low-input characteristics that made fine fescues attractive in the first place.

Hard fescue, in particular, emerged as a standout. Modern hard fescue cultivars can survive extended drought without irrigation, maintain acceptable color with minimal fertilization, and tolerate mowing heights from two inches down to one inch. They are increasingly being used in eco-lawn mixes and low-maintenance sod blends — products specifically marketed to homeowners who want a functional, attractive lawn without the time, cost, and environmental footprint of a traditional high-input turf program.

This shift has not replaced the demand for premium bluegrass or tall fescue sod. Homeowners who want a showcase lawn still want those grasses, and breeders continue to improve them. But the low-input movement has added an entirely new category of sod products to the market — one that did not exist 20 years ago and one that is growing steadily as water costs rise, environmental awareness increases, and homeowners look for ways to reduce the time they spend maintaining their property.

Chapter 13: The People Behind the Grass

It is worth pausing to acknowledge what the turfgrass breeding community actually accomplished, and the kind of people who did the work.

Dr. C. Reed Funk joined the Rutgers faculty in 1961 and was the first full-time cool-season turfgrass breeder at any university in the United States. He developed landmark cultivars of perennial ryegrass, tall fescue, Kentucky bluegrass, and fine fescue that became the foundation for modern turf-type cultivars used throughout the world. He pioneered the first successful method of hybridizing Kentucky bluegrass. He identified the role of endophytes in insect resistance. After decades in turfgrass, he shifted in 1996 to an ambitious perennial tree crops breeding project, applying his plant breeding skills to developing nutritious, sustainable tree crops for marginal land. He died on October 4, 2012, at the age of 84, after a brief battle with pneumonia.

Dr. William Meyer first connected with Funk in the early 1970s and entered a partnership with him in 1975, serving as president and turfgrass breeder for Pure Seed Testing, Inc. in Oregon. During his 24 years in private industry, Meyer developed or co-developed 80 improved cultivars. In 1996, he joined the Rutgers faculty as director of the turfgrass breeding program, a position he held until 2020. Under his leadership, the Rutgers germplasm collection grew dramatically — since 1996, extensive collection trips to Western and Eastern Europe generated over 10,000 new germplasm sources, giving Rutgers the largest collection of cool-season turfgrasses in the world. He was named the first C. Reed Funk Endowed Faculty Scholar in Plant Biology and Genetics at Rutgers, an honor that recognized his contribution to carrying Funk's legacy forward. Today, the breeding program is led by Dr. Stacy Bonos, who has continued to expand the work, including pioneering efforts in breeding creeping bentgrass for dollar spot resistance — work that helped produce the 007 bentgrass variety used on putting greens at the Tokyo Olympics.

Dr. Glenn Burton worked at the Coastal Plain Experiment Station in Tifton, Georgia, for 61 years. He developed Coastal bermudagrass, which doubled forage production in the South. He developed Tifway 419, which became the most widely used warm-season turfgrass in the world. He received 80 awards, including the National Medal of Science. His colleague Wayne Hanna, who worked alongside him for over 30 years, said Burton "didn't watch television — he only read scientific literature and his only real hobby was gardening." He once explained his life's work in a single sentence: "Helping feed the hungry of the world is my greatest accomplishment." He died on November 22, 2005, at the age of 95.

Dr. Wayne Hanna spent decades at the Tifton station, first with the USDA and then with UGA. He bred the bermudagrass hybrid that became TifTuf in 1992 and saw it through 25 years of testing before its commercial release. Dr. Brian Schwartz, who took over the program from Hanna in 2009, provided the rigorous scientific evaluation that validated TifTuf's drought tolerance claims across the country.

At Penn State, researchers like Dr. Thomas Watschke and Dr. Peter Landschoot advanced turfgrass management science alongside the breeding work, helping translate new cultivar performance into practical recommendations for sod farmers, landscapers, and turf managers.

At the University of Minnesota, Dr. Eric Watkins focused on cold-climate turfgrass improvement and low-input fine fescue development — developing cultivars that could survive brutal Upper Midwest winters while requiring minimal maintenance.

At Texas A&M, researchers developed zoysiagrass and bermudagrass cultivars tailored for the southern plains and transition zone, including Palisades zoysiagrass and cold-hardy bermudagrass varieties that extended the range of warm-season grasses northward.

At Oregon State, the focus was on seed production science as much as breeding itself. Oregon's Willamette Valley produces the majority of the cool-season turfgrass seed grown in the United States, and researchers there worked to optimize how improved cultivars were grown, harvested, and processed at commercial scale — the critical link between a breeder releasing a new variety and a sod farmer actually being able to plant it.

Jack Murray at the USDA in Beltsville laid the groundwork for the NTEP and collected zoysiagrass germplasm from East Asia that produced cultivars still in use today. David Doguet in Texas developed Zeon from Murray's collections. Kevin Morris has overseen the NTEP since 1998, managing trials across 35 states and ensuring the integrity of the data that the entire industry relies on.

These researchers — and dozens of others at programs across the country — shared a common trait: patience. Turfgrass breeding does not produce instant results. A single cultivar takes 10 to 15 years from initial cross to commercial release. TifTuf took 25. A career in turfgrass breeding means committing to a process where you might not see the full impact of your early work until you are approaching retirement. It requires a tolerance for repetition, an eye for incremental differences, and a belief that small improvements compounded over time can change an entire industry.

They were right.

Chapter 14: The Grass You Walk on Tomorrow

The breeding work is not finished. It never will be.

Climate patterns are shifting. Growing seasons are getting longer in some regions and more erratic in others. Diseases and insects that were once confined to specific zones are expanding their range. Water availability is becoming less predictable in nearly every part of the country. The traits that made a cultivar successful 20 years ago may not be sufficient 20 years from now.

Breeders today are working on challenges that Funk's and Burton's generations could not have anticipated. Developing grasses that can handle wider temperature swings. Improving salt tolerance for lawns near treated roads and in coastal communities. Breeding for reduced growth rates that require less mowing — not just for homeowner convenience, but to reduce the fuel consumption and emissions associated with lawn maintenance across millions of acres of managed turf. Exploring the potential of new endophyte strains that provide broader pest resistance or even drought tolerance beyond what the grass's own genetics can deliver.

At UC Riverside in California, Dr. James Baird has been breeding bermudagrass hybrids specifically for extreme drought tolerance, subjecting nurseries of 400 hybrids to more than 40 days without water. Two standout cultivars — Presidio and Coachella — are expected to reach the market soon.

At Rutgers, the germplasm collection continues to expand. More than 36,000 individual turf plots are under evaluation at the Adelphia Farm at any given time. The program that Funk started with parking lot collections now maintains the largest collection of cool-season turfgrasses in the world.

Genetic tools have advanced as well. Modern breeders have access to molecular markers that allow them to identify desirable traits at the DNA level, accelerating the selection process that used to rely entirely on years of visual observation. Genomic mapping of major turfgrass species is giving breeders a clearer picture of which genes control which traits, allowing more targeted crosses and reducing the element of chance that characterized earlier breeding work. High-throughput phenotyping and artificial intelligence are beginning to reshape how trials are evaluated, compressing timelines that once seemed immovable.

But the fundamentals have not changed. A breeder still walks a plot, evaluates individual plants, selects the best ones, and crosses them. The timeline is still measured in years. The work still requires patience, attention to detail, and a long-term view that is increasingly rare in a world that expects instant results.

What You Are Really Buying

When you order a pallet of sod for your lawn — whether you are in New Jersey or Nebraska, Georgia or Oregon — you are not just buying grass. You are buying the end product of a research pipeline that stretches back more than half a century. Every roll on that pallet contains cultivars that were developed through thousands of controlled crosses, evaluated across dozens of trial sites, tested against the specific diseases and insects and climate stresses of your region, and selected from tens of thousands of individual plants for the precise combination of traits that make them perform in your yard.

The grass in that roll can handle a brutal August heat wave because someone spent years breeding heat tolerance into its lineage. It can fight off chinch bugs because someone figured out that a fungus living inside the plant could do the work of a chemical insecticide. It can survive an ice storm because someone in Minnesota selected for winter hardiness in conditions that would kill most living things. It uses 38 percent less water than the variety it replaced because a man in Georgia planted 27,700 hybrids and waited 25 years for the best one to prove itself. It looks the way it does — fine-textured, dense, dark green — because a man named Reed Funk picked up an unusual plant growing in a parking lot crack more than 60 years ago and had the vision to see what it could become.

That is the story of the grass beneath your feet. Most people will never know it. But every time a homeowner steps onto a freshly sodded lawn and it feels thick and looks beautiful and survives the summer and comes back in the spring, they are standing on the work of people who dedicated their lives to making that moment possible.