Ornamental · Poaceae
Bahiagrass
Paspalum notatum
Wiry and drought-proof, its coarse light-green blades grip poor sandy ground where finer lawns surrender.
Full sun
Every 3–7 days
60–90 days
USDA 7–11
Overview
Bahiagrass is a warm-season perennial rising from deep, wide-ranging roots, and that root system is exactly why it shrugs off dry spells. Its origins lie in South America, and it spread across the warm, sandy lower South, where it now works as lawn, pasture, and roadside cover. The giveaway is the tall seedheads, each forking into a two-pronged Y above the blades.
Its hallmark is how little it demands. The grass does well in infertile, acidic, sandy soil that would starve finer turf, lives on a light feeding, and seldom calls for water once it is rooted. What you get back is an open, coarse, light-green stand rather than a plush carpet, plus a near-steady flush of seedheads all summer.
Think of it as a grass built for use over show. Hand it full sun and room to spread and it will crowd out weeds and lock a slope in place on next to nothing. Demand a manicured look and you will be cutting weekly and still running down those seedheads.
Care
The short version: full sun, infertile acidic sandy soil, and barely any water once the roots take. Mow high at 3 to 4 inches, feed sparingly, and count on frequent summer mowing to hold the seedheads down.
Light
Bahiagrass wants full sun to perform and will not keep a stand under shade. The fuller the direct light, the thicker and more weed-resistant the turf grows.
Water
After it roots, this ranks among the most drought-tolerant lawn grasses going, all thanks to those deep roots. Water it only when needed, roughly half to three-quarters of an inch each time, and let it brown off into dormancy through a dry stretch rather than battling it. The exception is new plantings, which need 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 well past that and the grass pales and stalls, so hold the soil to the acidic side.
Temperature
Being a warm-season grass, it greens in the heat and fades in the cold, taking a span of roughly 19°F to 100°F (-7°C to 38°C). Through its hardiness range it slips into dormancy in winter instead of dying off.
Humidity
Outdoor humidity means nothing to a settled lawn. What counts more is letting the blades dry between waterings, since lingering wetness on the leaves is what opens the door to dollar spot.
Feeding
Bahiagrass eats lightly, asking for only about 1 to 2 pounds of nitrogen per 1000 square feet a year across the spring and summer growing season. On high-pH soils a hit of iron as ferrous sulfate clears the yellowing that lime-heavy ground sets off.
Pruning
Cut it 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 keep them flat, and hold a sharp edge since the wiry stalks dull a blade fast.
Repotting
none
Size & spacing
The mown turf sits low at 3 to 4 inches (8 to 10 cm), while each plant reaches out 1 to 3 feet (30 to 100 cm) to bind the stand into one. Plant or sprig with that reach in mind so the cover knits shut without long bare runs.
When to plant
Bahiagrass needs warm ground before it stirs. Sow the seed or lay the sod from spring into early summer so the stand gets the full warm season to root and close in before the cooler months slow its growth.
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 problems are cosmetic and simple to read once the signs are clear. Seedheads, yellowing, thin spots, and small bleached rings each trace back to a specific cause. Find the match below, then step in before it widens.
Soft, honeycombed ground under quick-wilting patches
Mole crickets are the harshest insect threat bahiagrass meets, plowing through the root zone and shearing off roots along the way. To pin them down, run a soap flush by stirring 1 to 2 ounces of lemon dish soap into 2 gallons of water across a 2-square-foot patch, and the crickets boil to the surface within minutes. Hit the young nymphs in early summer before the colony swells, and keep the turf strong enough to outgrow a little nibbling.
Fix:
- Treat for mole crickets when young nymphs are active in summer
- Keep turf healthy so it can outgrow light feeding
Pale silver-dollar rings freckling the grass
Those coin-sized pale rings are dollar spot, a fungus that moves in when the grass goes hungry for nitrogen and the blades sit damp under dew. Check the blades for lesions banded like an hourglass to be sure. A modest feed of about half a pound of nitrogen per 1000 square feet pushes the grass to grow through it, and watering early so the blades dry by dusk keeps the rings from widening.
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
Two-pronged seedheads rising above the blades soon after mowing
Those slender forked stalks, each splitting into a two-pronged spike, are normal bahiagrass behavior rather than a fault, and they climb fastest under the long days of summer. Run the mower every 7 to 14 days to hold them at turf level, and keep a keen edge on the blade because the wiry stems blunt it in a hurry. For a cleaner surface, the Argentine type sends up shorter, sparser 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
Washed-out blades veined in green on chalky soil
The pale blades threaded with darker green veins are iron chlorosis, which surfaces once the soil pH passes 7.0 and the iron stops reaching the grass. A spray of ferrous sulfate at about 2 ounces per 1000 square feet brings the color back in a matter of days, and you can repeat it every 6 weeks or so should the paleness creep in again. The durable answer is to keep the ground 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 does not appear on the ASPCA toxic-plant lists. The genuine cautions sit with grazing animals, since the summer seedheads can carry an ergot fungus, and with hay-fever sufferers troubled by the pollen. Mow the seedheads off and the grazing risk is gone for good.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
A bahiagrass lawn poses no danger to cats. As with any grass, a few chewed blades may trigger a small hairball, yet the plant holds no toxin of its own.
Dogs None
Dogs are free to tear around and flop down on bahiagrass with no concern. Nothing in the blades is poisonous, and the coarse turf takes paws and rough play in stride.
Horses Moderate
The grass makes sound forage and is fine to graze. The lone snag is the summer seedheads, which may host an ergot fungus that brings tremors and a wobbly, staggering walk. Cut the seedheads down and the danger leaves with them, and a horse already affected settles once taken off the pasture.
Rabbits Safe
Rabbits can graze bahiagrass safely, since neither the leaves nor the roots hold any toxin.
Livestock Moderate
Cattle, goats, and sheep graze bahiagrass commonly as pasture. The only hazard comes from ergot-infected seedheads, which can set off paspalum staggers, a tremoring and off-balance state. Mow the seedheads down and that risk is gone.
Birds Safe
Birds pick at the seed and forage across bahiagrass with no harm.
People Safe
Walking, sitting, and playing on a bahiagrass lawn is perfectly safe. The single caveat is its pollen, which can stir up hay fever, so allergy-prone gardeners may prefer to mow before the seedheads open.
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 account for most plantings, and the pick hinges on whether you are after a neater lawn or sturdier pasture. These are the ones worth knowing.
Pensacola
The most planted type carries slim, narrow blades and brushes off the cold, though the cost of that hardiness is tall, plentiful seedheads.
Argentine
A broader-bladed type that weaves into thicker, more even sod and throws fewer, shorter seedheads, which makes it the neater choice for lawns despite weaker cold tolerance.
Tifton 9
A refined Pensacola line developed by USDA-ARS and the University of Georgia, prized for sturdier seedlings and longer, greener blades, and raised chiefly as pasture and forage.
TifQuik
A quick-sprouting selection within the Pensacola line that settles in fast for pasture and forage.
How to propagate
Among warm-season grasses bahiagrass is one of the simpler ones to begin, whether you sow it as seed or roll it out as sod. Either route rewards patience, since it is slow to knit into full cover.
SeedEasy
Spring to early summer when soil is warm · Several weeks to a few months; scarified seed speeds germination
Among warm-season lawn grasses, bahiagrass is one of the rare few you can raise directly from seed, which is why most fresh stands start out this way. Drop the seed from spring into early summer after the soil warms, and count on several weeks to a few months for the cover to close in, since it sprouts at a slow pace. Scarified seed breaks ground sooner if you can track it down.
DivisionModerate
Warm season; spring to summer · A few weeks for sod to root; plugs and sprigs are slow to fill in
Rolling out sod or setting sprigs and plugs through the warm months puts cover down quicker than seed, with sod taking root in a few weeks. The catch is that bahiagrass never packs into tight, uniform sod slabs, and plugs are slow to stitch into one solid stand.
Myths
Bahiagrass fills in as a smooth, fine-bladed carpet just like Bermuda or St. Augustine.
It builds an open, coarse, light-green sod and keeps thrusting up tall, Y-forked seedheads all summer long, so the surface never settles into a carpet however often the mower runs. Its true calling is broad, low-effort ground such as pastures, roadsides, and erosion control, where its grit and drought resistance matter far more than a polished finish.