Cyperaceae
Needle spike-rush
Eleocharis acicularis
Also known as Isolepis acicularis, Hairlike spike-rush, Clavula acicularis, Eleocharis acicularis
Native Plants · Aquatic Plant · Marginal Plant · Water Garden · Bog Plant · Pond Edge · Native · Rush · Sedge · Riparian · Wildlife Habitat
Needle spike-rush is a graceful aquatic or marginal perennial that thrives in shallow water, boggy soil, or pond edges with full sun to partial shade. Keep the substrate permanently wet or lightly submerged — it will not tolerate drying out. It spreads gradually by rhizomes and is an excellent choice for water gardens, rain gardens, or native riparian plantings.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Maintain standing water or saturated substrate at all times; ideal for pond margins or aquatic planters · Keep consistently wet or submerged
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 4.5–7
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 6 in – 5 ft
- Spacing
- 6 in apart
- Growth rate
- Moderate
- Root depth
- Shallow
- Flowers
- No
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alabama, Alaska, Albania, Alberta, Altay, Arizona, Arkansas, Austria, Baltic States, Belarus, Belgium, Bolivia, British Columbia, Bulgaria, California, Caroline Is., Central European Rus, Colombia, Colorado
- Attracts
- Birds
Sources: trefle, usda
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