Sea Club-rush
Bolboschoenus maritimus
Last reviewed: June 2026
Light
full sun
Water
high
Size
12"–48" H × 12"–24" W
Bloom
Jun, Jul, Aug
Native to
AZ, CA, CO, CT and 29 more states
Browse plants for this ecoregion
Sea club-rush is a tall wetland sedge that forms dense clumps in consistently moist to wet soils. It produces distinctive brown, club-like flower clusters in summer and thrives in full sun bog gardens or rain gardens. This plant requires constant moisture and will struggle in typical landscape conditions.
In an HOA neighborhood
Sea Club-rush takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Appears very wild and marsh-like
- Requires wet conditions uncommon in typical landscaping
- Can spread aggressively in suitable conditions
Wildlife value
The seeds provide food for waterfowl and wetland birds, while the dense growth offers nesting habitat for marsh birds.
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 Sea Club-rush fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.