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Red waterwort

Elatine rubella · Aquatic plants

Red waterwort: A stand of it

A stand of it · Photo: Steve Matson / CC BY

NativeSubmerged

Also called Southwestern waterwort

How to identify Red waterwort

  • Tiny, opposite narrow leaves often tinged red
  • Small pinkish flowers in the leaf bases
  • Low, creeping or upright stems

Similar plants

Waterwort has broader oval leaves, and water starwort lacks the reddish color.

Growth profile

Growing seasonAnnual that sprouts in late spring or as water drops, flowers through summer and dies in fall.
Starts growingAbout 55 to 60 F water or warm exposed mud
LightNeeds shallow water or exposed mud
DepthMoist mud to 2 feet
How it spreadsSeeds
HabitatMuddy shores, seasonal pools and drawdown zones.

Why it matters in a lake

A small annual of fluctuating water levels. Seeds persist in the mud for years.

Where it is found

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

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderMalpighiales
FamilyElatinaceae
Scientific nameElatine rubella

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