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Woolly fruit sedge

Carex lasiocarpa · Aquatic plants

Woolly fruit sedge: Flowers or seeds

Flowers or seeds · Photo: Matt Berger / CC BY

NativeEmergent

Also called Slender sedge, Woollyfruit sedge

How to identify Woolly fruit sedge

  • Very narrow, wiry rolled leaves
  • Seed sacs covered in fine hairs
  • Stems in long lines from rhizomes
  • Often grows in floating mats

Similar plants

Beaked sedge has wide leaves and smooth seed sacs; woolly sedge has flat leaves.

Growth profile

Growing seasonGrows from late spring, fruits in midsummer and dies back in fall.
Starts growingAbout 45 F water
LightFull sun
DepthSaturated mats to about 2 feet of water
How it spreadsRhizomes and seeds
HabitatBogs, fens and floating mats along lake and pond margins, often in acidic water.

Why it matters in a lake

Builds floating peat mats along lake edges.

Where it is found

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

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderPoales
FamilyCyperaceae
Scientific nameCarex lasiocarpa

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