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Pale spikerush

Eleocharis macrostachya · Aquatic plants

Pale spikerush: A stand of it

A stand of it · Photo: Neptalí Ramírez Marcial / CC BY

NativeEmergent

Also called Large spikerush

How to identify Pale spikerush

  • Round, leafless stems often pale green
  • Single brown spikelet at the tip
  • Grows in dense stands from rhizomes
  • Very similar to common spikerush

Similar plants

Common spikerush is nearly identical and separated by tiny seed features; many manuals combine them.

Growth profile

Growing seasonShoots in spring, flowers May to July and may die back early as water drops; rhizomes overwinter.
Starts growingAbout 45 to 50 F soil; full sun
LightNeeds full sun
DepthMoist shoreline to about 2 feet of water
How it spreadsRhizomes and seeds
HabitatPond margins, vernal pools, ditches and alkaline flats.

Why it matters in a lake

Common in drier valleys and on alkaline soils; often considered part of common spikerush.

Where it is found

  • Idaho: Occasional
  • Oregon: Occasional
  • Wyoming: Occasional

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderPoales
FamilyCyperaceae
Scientific nameEleocharis macrostachya

Need a hand?

Is it taking over your lake?

We identify what is growing, map how much of it there is and build a control plan that targets it without harming the rest of the lake.

Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596