American Senna
Senna marilandica
Last reviewed: June 2026
Light
full sun
Water
medium
Size
24"–48" H × 24"–36" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, CA, CT and 25 more states
Pollinators
bees, butterflies
Browse plants for this ecoregion
Wild senna produces clusters of bright yellow flowers from June through August on upright stems with compound leaves. This native perennial forms a rounded clump and develops attractive seed pods in fall. The plant has a clean, structured appearance that works well in cultivated gardens.
In an HOA neighborhood
American Senna is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Seed pods may look untidy if not removed
Wildlife value
Host plant for cloudless sulphur, little yellow butterfly.
The flowers attract native bees and butterflies, while the foliage serves as a host plant for some butterfly species. Seeds provide food for birds in fall and winter.
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 American Senna fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.