Department Header For Noxious Weed Division
Yellowstone County, Montana
Noxious Weed
Weed Information Contact Department

Brazilian Waterweed
(Egeria densa)

 

Hydrilla is Aquatic
Aquatic

Hydrilla Stem
Stem

Hydrilla Leaf
Leaf

Hydrilla Bloom 1
Bloom

Hydrilla Bloom 2
Bloom

Hydrilla Patch
Patch

Photos from Montana Weed Control Association

 

Type

Information

Toxicity

Non-toxic.

Control

Biological and aquatic herbicides. Contact your county weed district or local commercial applicator for additional information.

Habitat

Springs, lakes, ponds, marshes, ditches and rivers.

Root

Nodes along the stem fall off and start new plants.

Leaf Shape

Blade-shaped.

Lifespan

Perennial; two years or longer.

Priority 3 Weed

Not a noxious weed, but a regulated plant; potential for significant negative economic and ecological impacts.

Similar Looking Plants

Hydrilla and Elodea.

Important Information

More robust than Hydrilla; indentifiable by flowers and leaves. Hydrilla produces tubers and turions while Brazilian waterweed does not.

Information Supplied By Montana Weed Control Association