Longleaf wood oats
Chasmanthium sessiliflorum
Last reviewed: August 2026

Light
part shade
Water
medium
Size
18"–36" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
AL, AR, FL, GA and 9 more states
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 431 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaA shade-tolerant native grass with narrow leaves and slender flower spikelets held on wiry stems. It grows as a groundcover in dry, open woodlands, spreading gradually to form patches.
Wildlife value
Its seeds provide food for birds through fall and winter.
Common questions
- How much sun does Longleaf wood oats need?
- Longleaf wood oats grows best in part shade conditions.
- When does Longleaf wood oats bloom?
- Longleaf wood oats blooms in July, August, and September.
- Where is Longleaf wood oats native?
- Longleaf wood oats (Chasmanthium sessiliflorum) is native to AL, AR, FL, GA and 9 more states, per the World Checklist of Vascular Plants (Kew).
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Longleaf wood oats? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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