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Eleocharis obtusa

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Eleocharis obtusa

Common Name: Blunt Spikerush

Blunt Spikerush is a small, clump-forming wetland plant that grows 2 to 10 inches tall, featuring slender, grass-like stems topped with rounded seed heads. It is commonly found in marshes, pond edges, and wet meadows, thriving in saturated soils. This sedge-like species plays a crucial role in stabilizing shorelines, filtering water, and providing habitat for aquatic wildlife. Its ability to tolerate standing water makes it an excellent choice for rain gardens, wetland restorations, and erosion control projects.

Characteristics

Type	Graminoid
Sun	Full Sun, Partial Sun
Soil	Clay, Loam, Sand/Gravel, Peat, Calcareous
Moisture	Wet
Average Max Height (inches)	15
Suggested Plant Spacing (inches)	6
Dominance	Medium

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.

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