Panicled Bulrush
Scirpus microcarpus
Last reviewed: June 2026
Scirpus microcarpus (Panicled Bulrush) is a native wetland grass found across 31 US states from coast to coast. This moisture-loving sedge blooms from May through July in marshes, wet meadows, and stream edges.
The USDA PLANTS Database (opens in new tab) does not flag Panicled Bulrush as toxic to livestock.
Light
part shade
Water
high
Size
12"–48" H × 6"–24" W
Bloom
May, Jun, Jul
Native to
AZ, CA, CO, CT and 26 more states
Browse plants for this ecoregion
Small-fruited bulrush is a native sedge that forms clumps of narrow, grass-like foliage in wet areas. It produces small, inconspicuous brown flower clusters in late spring and early summer, thriving in consistently moist to wet soils.
Growing Panicled Bulrush
Grow Panicled Bulrush in part shade and high water. Mature plants reach 12 to 48 inches tall and spread 6 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Panicled Bulrush 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.
- Looks very wild and unmanicured
- Requires boggy conditions that appear unkempt
- May be mistaken for weedy marsh grass
Wildlife value
This wetland plant provides seeds for waterfowl and songbirds, and its dense growth offers nesting habitat for marsh birds. The roots help stabilize soil and filter water runoff.
Common questions
- Where does Panicled Bulrush naturally grow?
- Scirpus microcarpus is native to 31 states across the United States, ranging from coastal states like California, Washington, and Maine to interior regions including Colorado, Wyoming, and the Great Lakes states.
- When does Scirpus microcarpus bloom?
- Panicled Bulrush produces its flowering clusters from May through July, with the exact timing varying by location and local growing conditions.
- What growing conditions does Panicled Bulrush prefer?
- This native sedge thrives in consistently moist to wet soils and can tolerate full sun to partial shade conditions. It naturally occurs in marshes, wet meadows, stream banks, and other wetland habitats.
- Is Scirpus microcarpus the same as other bulrushes?
- Panicled Bulrush is distinguished from other Scirpus species by its branched, panicle-like flower clusters and smaller fruits, which gives it the species name microcarpus meaning small-fruited.
- Is Panicled Bulrush toxic to livestock?
- The USDA PLANTS Database does not flag Panicled Bulrush as toxic to livestock.
- Is Panicled Bulrush HOA-friendly?
- Panicled Bulrush 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 Panicled Bulrush? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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