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General Infomation

A multi-cellular green alga that attaches to sediments of ponds and lakes. Branch color can range from light green, to nearly translucent, to a grey-green color.

Biological Control

Biological Control of Aquatic Weeds with Triploid Grass Carp

Chara usually is beneficial to fish and wildlife.

Good to Excellent

Chemical Control

Herbicide, Formulation and Mode of Action Code
Amount of Formulation
Active Ingredient Rate or Concentration
Herbicide, Formulation and Mode of Action Code

copper complex (Cutrine-Plus Granular) 3.7 G (Cutrine-Plus) 0.9 lb/gal (K-Tea) 0.8 lb/gal

Amount of Formulation

60 lb/surface acre 1.2 gal/acre ft 1.7 to 3.4 gal/acre ft

Active Ingredient Rate or Concentration

2.2 lb/acre 0.4 ppm 0.5 to 1.0 ppm

Precaution and Remarks

Distribute granular formulation evenly over infested area when plants are young. If chara is in water less than 3 ft deep or growth is near the surface, the liquid formulation may be used. Dilute with water in ratio of at least 9-to-1 and apply uniformly. Warning: Copper is toxic to fish.


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Species Data


Prefers sandy, shallow water, but some species have been reported to grow up to 25 ft deep.

Similar Species

Chara lacks multi-branching stems and odor. Nitella may also grow in slightly deeper water than Chara.

Aquatic Plants App

Whether you're a professional botanist or a casual nature enthusiast, the NC State University (NCSU) Aquatic Weeds app has detailed information on a wide variety of aquatic weeds to assist in identification.