Ornamental · Poaceae
Bahiagrass
Paspalum notatum
Tough, drought-proof, and happy in poor sandy soil, bahiagrass holds ground where finer lawns give up.
Full sun
Every 3–7 days
60–90 days
USDA 7–11
Overview
Bahiagrass is a warm-season perennial running on deep, far-reaching roots, and those roots are the key to how gracefully it rides out drought. It traces back to South America and spread across the warm, sandy lower South, where it now pulls duty as lawn, pasture, and roadside cover. Spot it by the tall, two-pronged seedheads that fork into a Y above the turf.
Its standout trait is how little it demands. It flourishes in infertile, acidic, sandy soil that would leave other grasses starving, coasts on light feeding, and seldom calls for water once it is settled. The payoff is an open, coarse, light-green turf instead of a dense carpet, plus an almost nonstop run of seedheads through summer.
Think of it as a grass built for function over polish. Hand it full sun and room to spread and it crowds out weeds and binds a slope together with barely any input. Push it to mimic a fine lawn and you will be mowing weekly and still chasing down those seedheads.
Care
The short version: full sun, infertile acidic sandy soil, and barely any water once it has rooted. Keep the mower high at 3 to 4 inches, feed sparingly, and count on frequent summer mowing to keep the seedheads in check.
Light
Bahiagrass runs on full sun and won't keep a stand going in shade. Pour on the direct sun and the turf stays denser and far better at fending off weeds.
Water
Once those roots take hold, this ranks among the most drought-tolerant lawn grasses around, all down to its deep root system. Water only when needed, roughly half to three-quarters of an inch each time, and let it brown and go dormant through a dry spell instead of battling it. New plantings break that rule and want steady water for the first 2 to 3 weeks.
Soil
It genuinely favors infertile, sandy, acidic ground where finer grasses falter, hitting its stride around pH 5.5 to 6.5. Drive the pH much higher and the grass yellows and stalls, so keep things leaning acidic.
Temperature
Being a warm-season grass, it greens up in the heat and browns off in the cold, riding a span from about 19°F to 100°F (-7°C to 38°C). Across its hardiness range it slips into dormancy through winter rather than dying back.
Humidity
Outdoor humidity poses no concern for a settled lawn. What counts is letting the blades dry between waterings, because leaf wetness that lingers is exactly what opens the door to dollar spot.
Feeding
Bahiagrass is a light feeder, asking for only about 1 to 2 pounds of nitrogen per 1000 square feet each year across the spring and summer growing season. Where soils run high in pH, a shot of iron as ferrous sulfate clears the yellowing that lime-heavy ground sets off.
Pruning
Mow high at 3 to 4 inches and never strip off more than a third of the blade in a single pass. Through summer the tall Y-shaped seedheads rocket up within days, so plan to mow often to hold them down, and keep the blade sharp because the tough stalks blunt it fast.
Repotting
none
Size & spacing
The mowed turf holds low at 3 to 4 inches (8 to 10 cm), while individual plants reach out 1 to 3 feet (30 to 100 cm) to weave a stand together. Plant or sprig with that spread in your sights so the cover closes in without long bare gaps.
When to plant
Bahiagrass craves warm soil before it gets moving. Sow seed or lay sod from spring into early summer so the stand gets the full warm season to root and fill in ahead of the cooler weather that slows it.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Seed or sod in spring to early summer once soil is warm, allowing establishment before cool weather
- Harvest: Summer; tall two-spike Y- or V-shaped seedhead racemes
Hardiness
USDA hardiness zones: 7–11
Temperature: down to -18°C
Troubleshooting
Most bahiagrass setbacks are cosmetic and quick to diagnose once you know the tells. Seedheads, yellowing, thin patches, and small bleached spots each trace back to a specific cause. Match what you spot below, then jump on it before it spreads.
Patches wilting fast over spongy, tunneled ground
Mole crickets rank as the nastiest insect bahiagrass deals with, tunneling through the root zone and gnawing roots along the way. Pin them down with a soap flush: stir 1 to 2 ounces of lemon dish soap into 2 gallons of water, pour it over a 2-square-foot patch, and the crickets climb to the surface within minutes. Hit the young nymphs in early summer before the population swells, and keep the turf strong so it can ride out light feeding.
Fix:
- Treat for mole crickets when young nymphs are active in summer
- Keep turf healthy so it can outgrow light feeding
Small bleached circles dotting the lawn
Those silver-dollar patches are dollar spot, a fungus that grabs hold when the grass goes short on nitrogen and the blades sit wet under dew. Check for hourglass-banded lesions on the blades to confirm it. A light feeding of about half a pound of nitrogen per 1000 square feet pushes the grass right past the damage, and watering early so blades dry by evening shuts the spread down.
Fix:
- Apply a light nitrogen feeding (about 0.5 lb N per 1000 sq ft)
- Water early in the day so blades dry quickly and avoid evening irrigation
Tall Y-shaped seedheads racing back up days after the mow
Those forked stalks are completely normal for bahiagrass and signal nothing wrong, and they climb fastest under the long days of summer. Stay on top of them by mowing every 7 to 14 days, and keep a sharp blade since the stiff stems wear an edge down quickly. Want a neater finish? Reach for the Argentine type, which puts up fewer and shorter seedheads than the common kinds.
Fix:
- Mow frequently in summer (every 7 to 14 days) to keep seedheads down
- Keep a sharp, heavy-duty rotary blade because the tough seedstalks dull blades
- Choose Argentine for fewer, shorter seedheads if a tidier look is wanted
Yellow blades with greener veins over limy ground
What you are seeing is iron chlorosis, and it surfaces when soil pH pushes past 7.0 and ties the iron up beyond the grass's reach. Spread ferrous sulfate at roughly 2 ounces per 1000 square feet and the color rebounds within days, repeated every 6 weeks or so should the yellow creep back. The durable answer? Keep the soil acidic and skip the lime.
Fix:
- Apply ferrous sulfate at about 2 oz per 1000 sq ft, repeating roughly every 6 weeks as needed
- Avoid raising soil pH; do not over-lime
Toxicity
A bahiagrass lawn is safe for pets and people and stays off the ASPCA toxic-plant lists. The real cautions land on grazing animals, since the summer seedheads can pick up an ergot fungus, and on hay-fever sufferers thrown by the pollen. Mow the seedheads off and the grazing risk clears entirely.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Cats are perfectly fine on a bahiagrass lawn. As with any grass, a few chewed blades might trigger a small hairball, yet the plant holds no toxin at all.
Dogs None
Let dogs sprint and roll across a bahiagrass lawn with no worries. Nothing in the blades is poisonous, and the turf stands up beautifully to paws and rough play.
Horses Moderate
The grass makes good forage and grazes safely on its own. The one snag is the summer seedheads, which can pick up an ergot fungus that triggers tremors and a wobbly, staggering walk. Mow those seedheads off and the danger leaves with them, and any horse that was affected settles once it is moved off the pasture.
Rabbits Safe
Rabbits can graze bahiagrass freely, since neither the leaves nor the roots carry any toxin.
Livestock Moderate
Cattle, goats, and sheep graze bahiagrass across wide pastures. The only trouble comes from ergot-infected seedheads, which can bring on paspalum staggers, a tremoring and off-balance condition. Keep those seedheads mowed and the hazard disappears.
Birds Safe
Birds peck the seed and forage across bahiagrass with no harm done.
People Safe
Walk, sit, and play on a bahiagrass lawn with confidence. The single thing to flag is that its pollen can stir up hay fever, so anyone sensitive may want to mow ahead of the seedheads opening.
Safe as a lawn for pets and people. Two grazing-only nuances: grass pollen is allergenic to sensitive people, and for livestock the Paspalum seedheads can be infected with ergot (Claviceps paspali) whose sclerotia cause paspalum staggers (tremors and incoordination) in grazing cattle and horses. Mowing off seedheads removes this risk; it does not affect pet or human safety of the lawn.
Varieties
A handful of named types cover nearly every planting, and your pick comes down to whether you are after a tidier lawn or tougher pasture. Here are the ones worth knowing.
Pensacola
The runaway favorite of plantings, this one wears narrow leaves and laughs off the cold, though it trades that grit for tall, prolific seedheads.
Argentine
Broader in the blade, this type weaves into denser, more even sod and throws fewer, shorter seedheads, making it the neater choice for lawns even though it copes with cold less readily.
Tifton 9
An improved Pensacola selection from USDA-ARS and the University of Georgia, bred for stronger seedlings and longer leaves and grown chiefly for pasture and forage.
TifQuik
A quick-germinating Pensacola-line selection that establishes in a hurry for pasture and forage use.
How to propagate
Bahiagrass ranks among the friendlier warm-season grasses to start, whether you sow it from seed or roll it out as sod. Either path rewards patience, since it knits into full cover slowly.
SeedEasy
Spring to early summer when soil is warm · Several weeks to a few months; scarified seed speeds germination
Bahiagrass is one of the rare warm-season lawn grasses you can launch directly from seed, and that is exactly why most fresh stands kick off this way. Drop seed in spring to early summer once the soil has warmed, then count on several weeks to a few months for it to fill in, since germination runs slow. Track down scarified seed and it comes up quicker.
DivisionModerate
Warm season; spring to summer · A few weeks for sod to root; plugs and sprigs are slow to fill in
Lay sod or set sprigs and plugs through the warm months and you get cover faster than seed, with sod rooting inside a few weeks. The catch is that bahiagrass never builds tight, uniform sod slabs, and plugs creep along before they knit into a solid stand.
Myths
Bahiagrass gives you a fine, manicured carpet to rival Bermuda or St. Augustine.
It builds open, coarse, light-green sod and keeps launching tall Y-shaped seedheads right through summer, so it never reads as a polished lawn however often you run the mower. Where it truly shines is broad, low-maintenance ground such as pastures, roadsides, and erosion control, places where its grit and drought resistance matter far more than a clean finish.