Carpetgrass

Axonopus fissifolius

a sheep standing in a field of tall grass

A creeping, low-maintenance grass that forms a dense carpet-like lawn in the humid Southeast. Carpetgrass thrives in wet, acidic soils where other grasses fail, making it ideal for low-lying areas and coastal regions. Its aggressive spreading habit quickly fills in bare spots, creating a uniform, soft lawn that's perfect for areas with challenging drainage.

Sun

Full sun to partial shade

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Zones

7–10

USDA hardiness

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Height

2-4 inches

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Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Transplant

Direct Sow

Transplant

Direct Sow

Showing dates for Carpetgrass in USDA Zone 7

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Zone Map

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Carpetgrass · Zones 7–10

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

SpacingSeed: 3-5 lbs per 1000 sq ft

SoilMoist, acidic, sandy or clay soils

pH4.5-6.5

WaterHigh moisture needs, thrives in wet conditions

SeasonWarm season

FlavorN/A

ColorLight to medium green

SizeN/A

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 7	—	May – June	March – May	—
Zone 8	—	April – June	March – May	—
Zone 9	—	March – May	February – April	—
Zone 10	—	March – April	January – March	—

Complete Growing Guide

Light: Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours). Soil: Clay, Loam (Silt), Sand. Soil pH: Acid (<6.0). Drainage: Moist. Growth rate: Medium. Maintenance: Medium. Propagation: Seed. Regions: Coastal, Piedmont.

Harvesting

Fruits are available July-November.

Color: Brown/Copper. Type: Caryopsis.

Harvest time: Fall, Summer

Storage & Preservation

Carpetgrass doesn't require storage or preservation as it's a living turf grass maintained in-ground. For sod rolls or seed, store in cool (50-60°F), moist conditions to maintain viability. Keep sod rolls in shade and moist for no more than 24-48 hours before installation. Seed can be preserved in airtight containers at 32-41°F with low humidity (30-40%) for up to 2 years. Maintain established lawns through regular watering during dry periods and proper drainage management to preserve turf quality and longevity.

History & Origin

Origin: Central and southeastern U.S.A., Tropical/ Subtropical America

Advantages

+Attracts: Small Mammals, Songbirds

Companion Plants

White clover is the most practical companion here — it fixes nitrogen at the root level, which offsets carpetgrass's modest fertility needs without you having to reach for the fertilizer bag as often. Low-growing plants like creeping thyme and wild strawberry sit at a similar 2–4 inch height without shading out the turf, and they pull in pollinators if you're stretching mow intervals. Dandelion and plantain are often already present in carpetgrass lawns; their deep taproots break up compaction that carpetgrass's shallow root system simply can't address on its own.

The real trouble comes from the grasses. Bermuda grass (Cynodon dactylon) spreads by both stolons and rhizomes — once it gets into a thin spot, it doesn't give it back. Crabgrass (Digitaria spp.) does the same in summer gaps. Nutsedge (Cyperus spp.) is the worst of the three because pulling it just fragments the tubers and spreads it further. Your best defense against all of them is keeping carpetgrass dense enough at 3–5 lbs of seed per 1,000 sq ft that bare soil never stays bare long.

Plant Together

White Clover

Fixes nitrogen in soil, enhances grass growth, and provides natural fertilization

Dandelion

Deep taproot breaks up compacted soil and brings nutrients to surface for grass

Plantain

Tolerates foot traffic well and helps prevent soil compaction in lawn areas

Violets

Low-growing groundcover that complements grass without competing for sunlight

Yarrow

Improves soil health and attracts beneficial insects while tolerating mowing

Chamomile

Natural pest deterrent and soil conditioner that grows well with grasses

Wild Strawberry

Low-growing groundcover that fills bare spots and prevents weed invasion

Creeping Thyme

Drought-tolerant groundcover that releases pleasant fragrance when stepped on

Keep Apart

Crabgrass

Aggressive annual grass that outcompetes carpetgrass for nutrients and space

Bermuda Grass

Fast-spreading perennial that can overwhelm and choke out carpetgrass

Nutsedge

Invasive sedge with aggressive root system that competes heavily for water and nutrients

Dollar Weed

Forms dense mats that block sunlight and prevent carpetgrass establishment

Pests & Disease Resistance

Resistance

Good resistance to most diseases in preferred conditions

Common Pests

Chinch bugs, army worms, sod webworms

Diseases

Brown patch, dollar spot in dry conditions

Troubleshooting Carpetgrass

What you'll see, why it happens, and what to do about it.

Irregular tan or straw-colored patches, 2–12 inches across, appearing in late summer heat

Likely Causes

Brown patch (Rhizoctonia solani) — a fungal disease that thrives when nights stay above 70°F and humidity is high
Overwatering or poor drainage keeping the canopy wet overnight

What to Do

1.Water in the early morning so foliage dries before nightfall — evening irrigation is the fastest way to invite this one
2.Avoid excess nitrogen fertilizer in summer; it pushes soft growth that Rhizoctonia loves
3.For severe cases, apply a fungicide labeled for Rhizoctonia on turf grasses and hold off on mowing until the patch firms up

Small, scattered dead spots across the lawn during dry stretches, each roughly the size of a silver dollar, bleached tan at the center

Likely Causes

Dollar spot (Clarireedia jacksonii) — shows up when soil moisture drops and nitrogen is low
Thatch buildup deeper than 0.5 inches blocking water penetration and trapping heat at the crown

What to Do

1.Give the lawn a slow, deep watering — 1 inch per week is the standard target — rather than frequent shallow passes
2.Side-dress with a light balanced fertilizer to push some nitrogen into stressed turf
3.Dethatch if the layer has exceeded half an inch; carpetgrass sits low and thatch builds up faster than you'd expect at 2–4 inches of height

Yellowing turf with ragged feeding damage near the soil line; grass pulls up easily in chunks

Likely Causes

Sod webworms (Crambus spp.) — larvae feed at the thatch layer, cutting grass stems at the base
Armyworms (Spodoptera frugiperda) — they move in fast and can strip a section of lawn in 48 hours during late summer

What to Do

1.Do the soap flush test: mix 2 tablespoons of dish soap in 1 gallon of water and pour over a 1-square-foot area — larvae surface within minutes if they're present
2.For confirmed infestations, apply a Bt-based (Bacillus thuringiensis) product for lighter pressure, or a pyrethroid labeled for turf if the damage is spreading fast
3.Mow at the higher end of carpetgrass's range (3–4 inches) to make the canopy less hospitable to egg-laying adults

Frequently Asked Questions

How tall does carpetgrass grow and how often should I mow?▼

Carpetgrass typically grows 2-4 inches tall and should be mowed to 1-1.5 inches height during the growing season. Mow every 7-10 days during active growth in spring and summer. Maintain consistent mowing schedules to encourage denser turf and reduce weed invasion. Adjust blade height seasonally, raising slightly in summer stress periods.

Is carpetgrass good for beginners and low-maintenance lawns?▼

Yes, carpetgrass is excellent for beginners and those seeking low-maintenance turf. It thrives in humid Southeast conditions without extensive fertilization or pest management. Its aggressive spreading fills bare spots naturally, and it tolerates wet, acidic soils where premium grasses fail. Minimal inputs are needed once established in suitable growing conditions.

Can you grow carpetgrass in containers or shade?▼

Carpetgrass isn't suitable for container growing as it's a spreading lawn grass requiring in-ground installation. However, it performs well in partial shade (4-6 hours sunlight) and tolerates shaded areas better than many turf grasses. Full sun (6+ hours) produces denser, healthier turf, but partial shade remains acceptable in humid regions.

When is the best time to plant or install carpetgrass?▼

Plant carpetgrass in spring (March-May) or fall (August-October) when soil temperatures are favorable (60-75°F). Spring planting gives grass maximum growing season to establish before summer heat. Fall planting allows root development during cooler months. Avoid winter installation. Ensure adequate moisture during establishment, typically 4-6 weeks until roots anchor into soil.

What pests affect carpetgrass and how do I prevent them?▼

Chinch bugs, armyworms, and sod webworms are primary carpetgrass pests. Maintain healthy turf through proper watering and mowing to increase natural disease resistance. Monitor for pest signs (brown patches, wilting) and use targeted treatments if infestations occur. Avoid over-fertilization, which encourages pest populations and weakens turf resilience.

Why is carpetgrass ideal for wet, low-lying areas?▼

Carpetgrass evolved to thrive in acidic, moisture-rich southeastern soils where drainage is poor. Unlike premium cool-season grasses, it tolerates prolonged moisture and waterlogged conditions without root rot. Its aggressive spreading fills areas where erosion and poor drainage eliminate competitors, making it perfect for coastal regions, low-lying sites, and naturally wet landscapes.