Puerto Rico Fimbristylis
Fimbristylis autumnalis
Last reviewed: June 2026
Light
full sun
Water
low
Size
4"–12" H × 2"–6" W
Bloom
Aug, Sep, Oct
Native to
AL, AR, CT, DE and 32 more states
Browse plants for this ecoregion
Fimbristylis autumnalis is a small annual sedge that forms compact clumps of narrow, grass-like foliage. It produces inconspicuous brownish flower clusters from late summer through fall and thrives in sunny, dry conditions. This diminutive plant works well as a textural accent in rock gardens or naturalized areas.
In an HOA neighborhood
Puerto Rico Fimbristylis 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.
- Very small size makes it appear sparse in formal settings
- Annual lifecycle creates bare spots when plants die back
- Grass-like appearance may be mistaken for weeds
Wildlife value
This sedge provides seeds for small birds and ground-foraging wildlife in fall and winter. Its small stature and brief growing season offer limited but valuable late-season resources.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Puerto Rico Fimbristylis fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.