This page was updated on Monday March 17 2008

AQUATIC WEEDS
Herbicide Susceptibility Table

Herbicides commonly used to control aquatic weeds. An 'x' indicates that a particular weed is susceptible to the herbicide. This information was compiled from a number of sources including (but not limited to), US Army Corps of Engineers Technical Report A-88-9, 1988 and  the Indiana Commercial Pesticide Applicator Training Manual, 1997.   This information may change. Consult the herbicide label for the most current list of susceptible plants and use restrictions.  Read and follow label directions.  Inclusion in this table is for informational purposes only, does not constitute a recommendation or warranty.

Plant
Aquathol K
Copper Chelate
Copper Sulfate
Diquat
Hydrothol 191
Fluridone
Glyphosate
Aqua-Kleen
Hydrilla
 x
 x
 -
x 
 x
x 
- 
- 
Sago Pondweed
x
-
-
x
x
x
-
-
American Pondweed
x
-
-
x
x
x
-
-
Curly Leaved Pondweed
x
-
-
x
x
x
-
-
Variable Leaved Pondweed
x
-
-
x
x
x
-
-
Naiads

x
-
-
x
x
x
-
-
Water Hyacinth
 x
 -
- 
x 
- 
- 
x 
x 
Brazilian Elodea
 x
 x
- 
 x
- 
 x
- 
- 
Common Waterweed
-
-
-
x
x
x
-
-
Horned Pondweed
x
-
-
-
x
-
-
-
Widgeon Grass
x 
- 
- 
 x
- 
- 
- 
- 
Filamentous Algae
 -
 x
x 
- 
x 
- 
- 
- 
Eurasian Watermilfoil
 x
- 
 -
x 
x 
x 
 -
x 
Parrot's Feather
 x
- 
- 
x 
x
-
x
x 
Chara

 -
x 
x 
- 
x 
- 
- 
- 
Water Primrose
- 
- 
- 
- 
- 
 xb
x 
xb 
Water Penny
- 
- 
- 
x
- 
- 
- 
- 
Duckweed

 x
- 
- 
x 
- 
xa 
- 
- 
Watermeal
- 
- 
- 
- 
- 
 xab
- 
- 
Waterfern

 -
- 
- 
x 
- 
x 
- 
- 
Cattail

 -
- 
- 
x 
- 
xb 
x 
- 
Planktonic Algae
 -
x 
x 
- 
- 
- 
- 
- 

a A.S. formulation only

b Labeled for partial control only

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