Pale Spikerush
Eleocharis macrostachya
- Native to:
- Argentina, Bolivia, Canada, Chile, Colombia, Mexico, Peru, United States, Uruguay
iNaturalist: © jrebman (iNaturalist #160104978)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Eleocharis
- Species:
- Eleocharis macrostachya
- USDA Symbol:
- ELMA5
Growth Characteristics
- Life Cycle:
- Perennial

- Growth Habit:
- Graminoid

- Height:
- 91 cm

- Light Requirements:
- Full Sun

- Drought Tolerance:
- Low

- Bloom Months:
- may, jun, jul, aug

- Bloom Colors:
- red, orange, brown

Garden & Ecology Notes
- Minimum Light:
- Part Sun

- Best Light:
- Full Sun

- Habitat:
- Wetland, Salt marsh, Riparian
- Wildlife Value:
- birds, small mammals

- Salt Tolerant:
- Yes

- Fire Ecology:
- Fire adapted — tolerates or benefits from fire

- Ecology:
- Eleocharis macrostachya is an obligate wetland spike-rush forming dense rhizomatous colonies in marshes, wet meadows, vernal pools, and edges of streams and ponds. It provides critical shoreline stabilization, habitat, and cover for aquatic wildlife and waterfowl.

Soil Requirements
- Soil:
- clay — also tolerates loam, sandy, silt

- pH:
- 6.0 - 8.0 (adaptable)

- Drainage:
- wet

- Moisture:
- wet

- Notes:
- Occurs in saturated to seasonally inundated clays, silts, and fine sands. Tolerates moderately alkaline and saline substrates.
