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// SPECIES PROFILE · GRASS · NATIVE · SHORTGRASS PRAIRIE

Buffalograss

Bouteloua dactyloides

The only North American grass that built an entire continent's lawn before the lawn was invented. Bouteloua dactyloides — long known as Buchloe dactyloides until DNA work moved it back into Bouteloua in 2003 — is the soft, blue-green, sod-forming shortgrass that once carpeted the Great Plains from the Texas Panhandle north to Saskatchewan and was grazed by an estimated 30 million bison. It is a warm-season C₄ perennial, dioecious (separate male and female plants), and the lowest-input turfgrass that will grow honestly in NE Oklahoma. On the western edge of the Tulsa region, on the alkaline clays of Osage and Pawnee Counties, it is also genuinely native — not just adapted.

// QUICK FACTS
Family
Poaceae (grass family)
Group
Warm-season (C₄) perennial sod grass
Native range
Shortgrass & mixed-grass prairie, MT → N Mexico, native to W & C Oklahoma
USDA hardiness
Zones 3–9 (Tulsa = 7a/7b)
Mature size
4–8 in unmowed leaf height; flowering culms to 12 in
Spread
Vigorous surface stolons; forms a dense low sod
Sex
Dioecious — male & female plants are visually distinct
Sun
Full sun (does not tolerate shade at all)
Soil
Heavy clay to sandy loam; pH 6.5–8.5; not deep sand or saturated soil
Water
Once established, needs no supplemental irrigation in NE Oklahoma in a normal year
Greenup
Late April–May; dormant brown Oct–April
Bloom
May–Sept (flag-like male spikes; bur-like female heads at ground level)
Wildlife
Larval host for several skipper butterflies; cover for ground-nesting birds
Ecological role
Shortgrass-prairie matrix · the original native low-water turf
Buffalograss (Bouteloua dactyloides) — fine blue-green stolon-forming sod
Bouteloua dactyloides — the dense, low, blue-green sod of North America's only native turfgrass. Photo via Wikipedia / Wikimedia Commons.

Identification

[ field key — stolons · leaf · male flag · female bur ]

Habit & growth form

A low, dense, sod-forming warm-season grass that creeps across bare ground by long, surface-running stolons — not rhizomes — rooting at every node. Unmowed leaf blades stand only 4–8 in tall and tend to curl at the tip. There is no clump, no tall culm in vegetative tissue, and no rough texture: a healthy buffalograss stand looks and feels like a soft, slightly grey-blue carpet. This is the only common native grass in the region that builds a true mowable sod by surface stolons.

Leaves

Blades are narrow (1–2 mm wide), blue-green to grey-green, slightly twisted or curled, and finely hairy (pubescent) on both surfaces — a useful field mark separating it from blue grama (Bouteloua gracilis), which is mostly glabrous and a bunchgrass. The ligule is a fringe of short hairs. Leaves go fully straw-tan dormant from the first hard frost in October until reliable warm soils in late April; this winter dormancy is normal, not damage.

Flowers — dioecious & weird

Buffalograss has the most distinctive inflorescence of any common Plains grass because male and female flowers grow on separate plants:

  • Male plants raise small flag-like one-sided spikes (1–3 per culm) on slender stalks 4–8 in above the leaves — what most people first notice and mistake for "seedheads."
  • Female plants hide their inflorescences at or just above the soil surface as hard, bur-like clusters of 2–5 spikelets, partially enclosed by leaf sheaths. These burs are the seed unit; commercial "buffalograss seed" is sold as cleaned burs.

Confusables

Most often confused with Bouteloua gracilis (blue grama, also a Bouteloua) which is a bunchgrass with the famous "eyebrow" or "comma" inflorescence held at the top of a tall culm; with Bermudagrass (Cynodon dactylon), a non-native invasive that also spreads by stolons but has shiny, hairless, brighter green blades and a distinctive 3–7-fingered seedhead held well above the canopy; and with creeping bentgrass or zoysia in over-irrigated suburban lawns. None of the look-alikes share buffalograss's combination of soft pubescent blue-grey blades, surface stolons, and weirdly two-tier dioecious inflorescences.

Habitat & Range in NE Oklahoma

Buffalograss is the dominant matrix grass of the shortgrass prairie from eastern Colorado and the Texas Panhandle north to the Canadian border, and the codominant (with blue grama and little bluestem) of much of the mixed-grass prairie that crosses central Oklahoma. Its native stronghold in the state lies west of about the I–35 corridor, on heavy calcareous clays and shallow upland soils where summer heat is severe and rainfall is too low (15–25 in/yr) to support the deep-rooted tallgrasses.

In NE Oklahoma we are at the eastern edge of its native range. Wild stands occur on the alkaline clays and Permian limestone outcrops of Osage, Pawnee, Kay and northern Tulsa Counties — classic places to see it are the Tallgrass Prairie Preserve transition zones, overgrazed Osage County pastures where it persists as a stress-tolerant survivor, and the upland shortgrass patches on the Salt Plains. Tulsa proper sits near the climate boundary where buffalograss is plantable and useful but not historically dominant; further east, into the Ozarks and the wetter Cross Timbers, the native vegetation shifts to tallgrass and woodland and buffalograss persists only where deliberately planted.

Buffalograss is one of the most grazing-tolerant grasses on the continent: its growing point sits at or below the soil surface, so even very heavy grazing does not kill it, and it is one of the few native grasses that increases under sustained heavy use while taller, more palatable grasses decline. This is why historical bison herds, and modern overstocked cattle ranges, consistently leave a buffalograss-dominated remnant. It is also moderately fire-adapted, recovering quickly after dormant-season burns, though it depends less on fire than the tallgrasses do.

Ecology & Wildlife Value

[ grazers · lepidoptera · ground-nesters · soil ]

Bison, prairie dogs & grazers

Buffalograss co-evolved with the great migratory grazer guild of the Plains — bison, pronghorn, prairie dogs, and elk. Its short, dense, palatable forage and its ability to recover from grazing that destroys most other grasses made it the literal foundation of that food web. Black-tailed prairie dog colonies actively maintain buffalograss-dominated short turf around their towns, mowing taller competitors and fertilizing the soil with their burrows.

Larval host & pollinators

Buffalograss is a documented larval host for several Plains skipper butterflies, including the green skipper (Hesperia viridis) and the Pahaska skipper (Hesperia pahaska), and is grazed by numerous grasshoppers and short-horned grasshopper-mimicking moths. Wind-pollinated, so it does not feed bees directly — but a buffalograss lawn left to flower occasionally provides pollen for early-season generalist bees.

Ground cover & nesting

The dense low sod is exceptional cover for ground-nesting songbirds on the western edges of NE Oklahoma — horned larks, lark sparrows, grasshopper sparrows, and historically the Mississippi kite. It also shelters many small reptiles (six-lined racerunners, prairie skinks) and small mammals (deer mice, harvest mice). Far better wildlife value than the average Bermudagrass lawn.

Soil & carbon

Buffalograss roots reach 3–5 ft deep on undisturbed prairie soils, and the surface stolon-and-crown mat builds a tough, self-mulching layer that resists erosion on slopes and protects the soil surface from summer convective storms. Like all C₄ perennial grasses, it is a serious belowground carbon sink: the deep mineralized root mass of historic shortgrass prairie is one of the reasons mollisols (the world's best agricultural soils) formed under it.

Tulsa context — native vs adapted: If you live east of about US–75 and want a "natural" lawn made of locally indigenous Tulsa grasses, the historically correct answer is not buffalograss — it is little bluestem, big bluestem, and eastern gamagrass with forbs. Buffalograss is offered here as a regional native (originating roughly two counties west) that performs honestly as a low-water lawn substitute for people who want a mown turf without the inputs Bermudagrass or fescue demand.
Won't tolerate: deep shade (any), saturated soils, deep loose sand, acidic forest soils (pH < 6), or sustained competition from cool-season grasses or aggressive Bermudagrass. Buffalograss loses to Bermudagrass in irrigated, fertilized lawns — the whole point is to remove the inputs that favor Bermudagrass.

Horticulture & Care

[ siting · seed vs plugs · mowing · cultivars · weed control ]

When to plant intentionally

Buffalograss is the right choice when you want a low-input mown turf in full sun on well-drained soil, can accept winter dormancy (brown Nov–April), and are willing to abandon irrigation and fertilization. It is the wrong choice for shaded yards, irrigated sportsfields, weedy pre-existing Bermudagrass yards (you will lose), or anywhere the soil stays wet. Use it for front and side lawns, parking strips, low-traffic backyards, slope stabilization on dry banks, and as the base layer for a residential prairie meadow.

Establishment — seed, plugs or sod

Mowing & maintenance

Mow at 3–4 inches for a polished suburban look, or leave unmowed for a meadow-textured 4–8 in soft carpet that needs at most one or two mowings a year. Higher mowing height = thicker sod, fewer weeds, and better drought performance. Set a sharp blade and never scalp; the growing point at the soil surface is forgiving but a scalped buffalograss lawn opens to crabgrass and Bermudagrass within weeks. Do not bag clippings.

Weed control

Pests & diseases

Notable cultivars for NE Oklahoma

Cultivar Origin / sex Distinguishing feature Notes for Tulsa
'Cody' NE/USDA-ARS · vegetative female Cold-hardy, dense fine-textured turf, 4–6" leaf height Reliable workhorse cultivar for the southern Plains; widely sold as plugs.
'Prestige' Texas A&M · vegetative female Bred for the southern Plains; deep blue-green color, dense growth Among the best for Tulsa-region heat; pairs well with summer mowing schedules.
'609' NE Univ. · vegetative female Older release; robust, fast-spreading, slightly coarser than 'Cody' Common in older installations; still a good budget plug option.
'UC Verde' UC Davis · vegetative female Selected for greener color and longer green season in milder winters Performs adequately but bred for California; not the optimum match for our cold winters.
'Sharp's Improved' / 'Texoka' / 'Bowie' Seeded varieties Mixed male & female; established by burs rather than plugs Right choice for large acreage establishment; expect a less uniform turf than a vegetative cultivar.
'Legacy' NE Univ. · vegetative female Improved color and density over '609'; trademarked release Excellent for higher-end residential turf where uniformity matters.

For lawns, choose a female-only vegetative cultivar — you avoid the flag-like male inflorescences entirely, which gives a cleaner mown surface and prevents seed escape into nearby beds.

Cultural & Material Uses

Buffalograss is more an ecological and historical keystone than a material plant. Its uses cluster around grazing, erosion control, and the modern movement toward low-input native landscapes.

Sources & Further Reading

  • USDA NRCS PLANTS Database — Bouteloua dactyloides: plants.usda.gov/plant-profile/BODA2
  • USDA NRCS Plant Guide — Buffalograss (Buchloe dactyloides), Plant Materials Center, Manhattan KS.
  • USDA Forest Service Fire Effects Information System (FEIS) — Buchloe dactyloides: fs.usda.gov/database/feis/plants/graminoid/bucdac
  • Oklahoma State University Extension — Buffalograss Lawn Establishment and Maintenance (HLA-6606) and the OSU Turfgrass Research series.
  • Texas A&M AgriLife Extension — Prestige Buffalograss cultivar release and management bulletin.
  • University of Nebraska—Lincoln Turfgrass Program — release notes on 'Cody', '609', and 'Legacy' buffalograss cultivars.
  • Lady Bird Johnson Wildflower Center — Native Plant Database, Bouteloua dactyloides: wildflower.org — BODA2
  • Missouri Botanical Garden Plant Finder — Bouteloua dactyloides.
  • Columbus, P.M. et al. (2007), "Phylogenetics of Chloridoideae (Gramineae): A preliminary study based on nuclear and plastid DNA sequences", placing Buchloe within Bouteloua.
  • Wikipedia — Bouteloua dactyloides: en.wikipedia.org/wiki/Bouteloua_dactyloides (CC BY-SA 4.0; portions of the description and cultivar history sections summarize Wikipedia content).
  • Noble Research Institute (Ardmore, OK) — rangeland and grazing management bulletins on buffalograss in mixed-grass prairie.

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Companion Planting

[ guild · polyculture · cross-layer pairings ]

In a dry mixed-grass prairie planting, buffalograss pairs naturally with: new jersey tea (Ceanothus americanus), aromatic aster (Symphyotrichum oblongifolium), big bluestem (Andropogon gerardii), black-eyed susan (Rudbeckia hirta), little bluestem (Schizachyrium scoparium), and butterfly milkweed (Asclepias tuberosa).

Interplant buffalograss as a structural matrix between forbs to mimic native prairie architecture.