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Eleocharis acicularis (Needle Spikerush)

Eleocharis acicularis (Needle Spikerush)

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$30 minimum per species for seed.

Each species requires a minimum of $30 of seed to proceed with checkout.

Pure Live Seed

Seed is provided in Pure Live Seed (PLS) unless otherwise stated.

Pure Live Seed (PLS) expresses the viable seed content of a seed lot using its purity and germination or viability test results. It helps you compare seed lots and calculate how much bulk seed is needed to meet a specified PLS planting rate.

PLS weight and bag weight

PLS weight is not the same as the total weight of seed in a bag. For example, a lot with 80% purity and 75% viability contains 60% PLS: 80 × 75 ÷ 100 = 60. Supplying 10 lb PLS from that lot requires about 16.67 lb of bulk seed.

Use the current seed test and the stated basis of the mix specification. Germination calculations may include applicable hard or dormant seed. Seed-count estimates also require the number of seeds per pound; PLS alone does not provide a seed count.

What to check when buying a mix

Check whether each rate is stated in PLS pounds, bulk pounds, or a combination. A mix with both bases should not be described as having an all-PLS total.

PLS does not remove weed seeds or guarantee establishment. Review the seed label and analysis for weed content, and match site preparation, planting conditions and follow-up management to your project.

Sources: USDA NRCS, Understanding Pure Live Seed and The Importance of Seed Quality for Natural Resource Conservation.

Weight Conversions lbs. to oz.

0.01 pounds = 0.16 ounces

  • 0.1 pounds = 1.6 ounces
  • 0.25 pounds  = 4 ounces
  • 0.5 pounds = 8 ounces
  • 0.75 pounds = 12 ounces
  • 1.00 pounds = 16 ounces

Needle spikerush makes fine, low stems on wet ground or in shallow water. Its small scale suits close inspection, with warm-season growth in an open, sunny position.

For Eleocharis acicularis, choose full sun and wet soil. Recorded habitats include marshes; Sedge meadows; Calcareous seeps; Pond margins; Clear shallow ponds. Reported height: stems about 2–6 in long.

Growth habit: rhizomes often form dense, mat-like colonies. Allow space for this growth between neighboring plants over several seasons, rather than spacing only for the size of a young plant.

Plant specifications

Key growing facts

Sunlight Full sun
Soil moisture Wet
Height Stems about 2–6 in long
Bloom season Mid-summer into the fall
Show / hide ▾Growing & planting details
Growth habit Rhizomes often form dense, mat-like colonies
Root form Fibrous roots; Rhizomes
Soil pH 4.5–7.0
Drought tolerance Low
Salt tolerance Medium

Plant identification & seed reference

Botanical name Eleocharis acicularis
Other common names needle spikerush
Seed germination USDA lists cold stratification as required; duration is not specified.
Plant family Cyperaceae
Seeds per pound — reference estimate 900000

Plant characteristics

Eleocharis acicularis (Needle Spikerush) is primarily found on receding waterlines, mudflats, or shallow waters edges. It is a common plant of many wetland and marsh types found with Alisma subcoratum, Eragrostits hypnoides, and Phyla lanceolata. Its short stature and vivid color have made it a popular choice for an aquarium plant.

  • Flower Time June, July
Show / hide ▾Plant communities & associatesNo verified list yet

A species-level list has not yet been verified for this listing.

Show / hide ▾Native range & C-value

State nativity describes a broad range. Use the Chicago-region assessment for local context; a state listing does not establish county nativity.

Wetland indicator — NWPL 2022 Midwest OBL
C-value — Chicago region, Flora 2017 3
Chicago-region native — Flora 2017 Yes
Native range — U.S. states Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming
County nativity Not yet verified; occurrence records do not establish nativity.
Show / hide ▾Pollinators & wildlifeNo verified list yet

No additional named relationships have been verified for this listing.

Show / hide ▾Frequently asked questions

What are the ideal growing conditions for Needle Spikerush?
Light: Full sun. Soil moisture: Wet.

How do I germinate and establish Needle Spikerush from seed?
USDA lists cold stratification as required; duration is not specified.

Is Needle Spikerush deer and herbivore resistant?
Species-specific deer resistance has not been verified here. Even plants described as resistant may be browsed. Use physical protection where deer damage is a concern.

When should I expect Needle Spikerush to bloom?
Typical flowering period: Mid-summer into the fall. Timing varies with location and weather.

Show / hide ▾Sources & ecological notes

Native range & ecological ratings: Flora of the Chicago Region (2017), via Universal FQA; USACE Chicago FQA (2017); Kew WCVP / Plants of the World Online; USACE National Wetland Plant List.

Growing conditions & other references: Illinois Wildflowers, John Hilty; USDA NRCS PLANTS.

Native range does not identify the origin of the seed or plants offered. Community and wildlife records apply to the locations and conditions described.

Research notes & credits

USACE/ERDC fqadata — Chicago Region FQA 2017. Herman, B., Sliwinski, R. & Whitaker, S. (2017), Chicago Region FQA Calculator; distributed by USACE/ERDC in fqadata under CC0. Values may differ from Flora of the Chicago Region (2017). CC0 dedication. Retained for comparison; the displayed C-value follows Flora database 80.

Range data: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew; 4 June 2026 release, accessed 7 September 2026. © The Trustees of the Royal Botanic Gardens, Kew. CC BY 3.0; selected and reformatted. Kew cannot warrant the quality or accuracy of these data. This use has no Kew endorsement.

Flora rating attribution: Kenneth Johnson (2018), Flora of the Chicago Region UFQA Database, following Gerould Wilhelm and Laura Rericha (2017), Flora of the Chicago Region: A Floristic and Ecological Synthesis. Individual rating facts are presented with original commentary; the calculator’s software license is not treated as a license for the underlying Flora publication.

Growing guidance: Illinois Extension — Keeping deer out of the yard and garden. Selected facts in original wording. General deer advice is not a species resistance rating.

Seed Shipping & Care

There is a minimum order requirement of $30 for each seed species. Seed ships all year and typically ships within a week of an order being placed.

We have attempted to put together some basic information regarding native seed installation, establishment, and maintenance.  We hope you find it helpful.  If you need further assistance on native seed establishment, please schedule a free consolation call here.

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Ecosystem Restoration Considerations

Native Seed Establishment Best Management Practices

Native Seed Stratification Best Management Practices

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