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Plant Identification
 

Plant Identification  --  Emergent Weeds  -- Waterwillow

WATERWILLOW (Dianthera americana)


Treatment Tips: Tough stems may persist after death of plant. These may require mechanical removal.


Description: Leaves opposite and lanceolate* without a petiole. Perennial plant with purplish flower extending from base of the leaf. Stem is thick and spongy.


Distribution: Eastern U.S., common in shallow water.

 willow
Recommended Control Method: Mix 1 ounce of 2,4-D liquid (see label) in 1 gallon of water. Spray on foliage. Approximately 75 gallons of this solution will be needed to treat 1 acre of plants.
Alternate Control Methods-  Shore-Klear: 1 ounce per gallon of water plus non- ionic surfactant.
100 gallons of this solution will treat 1 acre.
*lanceolate: lance-shaped, several times longer than wide, broadest toward the base and tapering to the tip.



Descriptions and pictures are from the book "How to Identify and Control Water Weeds and Algae", Edited by James C. Schmidt, 5th edition revised 1998, copyright 1976 Applied Biochemists.
 
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