How much sun does Sea Club-rush need?

Sea Club-rush grows best in full sun conditions.

When does Sea Club-rush bloom?

Sea Club-rush blooms in June, July, and August.

Where is Sea Club-rush native?

Sea Club-rush (Bolboschoenus maritimus) is native to AZ, CA, CO, CT and 29 more states, per the USDA PLANTS Database and regional native plant society lists.

Is Sea Club-rush toxic to livestock?

The USDA PLANTS Database does not flag Sea Club-rush as toxic to livestock.

Is Sea Club-rush HOA-friendly?

Sea Club-rush takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Sea Club-rush

Name: Pollinator Patch
Author: Pollinator Patch

Bolboschoenus maritimus

Last reviewed: June 2026

The USDA PLANTS Database (opens in new tab) does not flag Sea Club-rush as toxic to livestock.

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

Coast Range Central California Valley Central California Foothills and Coastal Mountains Southern California Mountains Central Basin and Range Mojave Basin and Range Chihuahuan Deserts Sonoran Basin and Range

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.

Common questions

How much sun does Sea Club-rush need?: Sea Club-rush grows best in full sun conditions.
When does Sea Club-rush bloom?: Sea Club-rush blooms in June, July, and August.
Where is Sea Club-rush native?: Sea Club-rush (Bolboschoenus maritimus) is native to AZ, CA, CO, CT and 29 more states, per the USDA PLANTS Database and regional native plant society lists.
Is Sea Club-rush toxic to livestock?: The USDA PLANTS Database does not flag Sea Club-rush as toxic to livestock.
Is Sea Club-rush HOA-friendly?: Sea Club-rush takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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.

Ready to grow Sea Club-rush? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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