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American sloughgrass

Beckmannia syzigachne · Aquatic plants

American sloughgrass: Flowers or seeds

Flowers or seeds · Photo: Matt Berger / CC BY

NativeEmergent

Also called Sloughgrass

How to identify American sloughgrass

  • Grass 1 to 3 feet with flat leaves
  • Narrow head of round, flat spikelets in rows like fish scales
  • Soft, light green stems
  • Clumped annual or short lived

Similar plants

Shortawn foxtail has cylindrical fuzzy heads; mannagrasses have open heads.

Growth profile

Growing seasonGrows from spring, flowers June to August and dies by fall.
Starts growingAbout 45 to 50 F soil
LightFull sun
DepthMoist shoreline to about 1 foot of water
How it spreadsSeeds
HabitatShallow ponds, ditches, marsh edges and wet meadows.

Why it matters in a lake

Common in seasonal ponds; seeds feed waterfowl.

Where it is found

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

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderPoales
FamilyPoaceae
Scientific nameBeckmannia syzigachne

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