Plant types and subtypes: Grasses, Sedges, Wetland Grasses, Ornamental Grasses
Light Requirements: sun, part-sun
Water Use: high
Soil Moisture: moist, wet
Soil Description: acid, neutral, alkaline, average, clay, sand, gravel/rock
Bloom Time: June, July, August, September
Bloom Color: yellow
Leaf Color: green
Hardiness Zone: 3, 4, 5, 6, 7, 8, 9
Additional Tags: attracts birds, colonizing, emergent, naturalizing, ornamental foliage, pond margin plant, stream margin plant, swamp plant, water garden plant, wetland plant
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Eleocharis obtusaAlso known as:
Eleocharis obtusa is an attractive sedge that forms rounded clumps up to 20" tall. Though it has leaves, these are so tightly wrapped around the base of the stems (known as culms), that they are inconspicuous. Each culm is terminated by a distinctive, oval, flat-topped seed head.
Eleocharis obtusa is typically found growing at the edge of freshwater marshes, ponds, rivers, and in wet prairies and meadows. Although it is occasionally found in moist open woodlands, it should be considered shade intolerant. It is well adapted to average soil, that can vary from fine textured and sandy, heavy poorly drained clay, to coarse gravelly and rocky. It is an emergent species and can withstand permanent inundation in shallow freshwater (it is not tolerant of salt). Plants can be grown in typical garden conditions, provided they are not allowed to dry out for extended periods of time. It is an annual and will not reproduce vegetatively. It self-seeds readily, without becoming aggressive, and will provide a perennial presence under optimal conditions. Flower and seed production occurs from early summer to early fall. Zones 3-9
Propagate from seed only. These do not require pretreatment.
The non-aggressive nature of blunt spikerush makes it a good choice for use around small water features, ponds and in water gardens. It will not withstand competition from taller, more aggressive, perennial wetland species.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, VA, VT, WA, WI, WV
USDA Endangered Status:
- Endangered: PA
|Species||Eleocharis obtusa||blunt spikerush|