Smut Grass
Sporobolus indicus
Last reviewed: August 2026
Toxicity unknown
Smut Grass (Sporobolus indicus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
12"–48" H × 6"–24" W
Bloom
Jun, Jul, Aug, Sep
Native alternatives to Smut Grass
Smut Grass is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaSmut grass is a warm-season perennial grass that forms dense clumps with narrow leaves and produces distinctive dark, sooty seed heads from summer through fall. This drought-tolerant grass thrives in full sun and poor soils where other plants struggle. It can spread aggressively and may become weedy in some situations.
In an HOA neighborhood
Smut Grass takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Seed heads turn black and sooty looking
- Can spread aggressively and look weedy
- Often considered an undesirable weed grass
Wildlife value
The grass provides seeds for small birds and nesting material for wildlife. Its dense growth offers some shelter for small creatures.
Common questions
- How much sun does Smut Grass need?
- Smut Grass grows best in full sun conditions.
- When does Smut Grass bloom?
- Smut Grass blooms in June, July, August, and September.
- Is Smut Grass HOA-friendly?
- Smut Grass takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Smut Grass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz