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Plant Identification -- Submerged Weeds -- American Pondweed |
AMERICAN PONDWEED (Potamogeton americanus)
Treatment Tips: Chemical control of these plants may cause loss of the floating and submersed leaves, leaving the tough main stem intact. Death of the entire plant and root system will result. Best controlled before seed heads appear above the water surface.
Description: Floating leaves are oval with base tapered to distinct petiole. Submersed leaves are oval to lance-like, tapered to long petiole. Generally plant has sparse leafing. Leaves alternately arranged on stem.
Distribution: Widespread and common throughout U.S.
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Recommended Control Method: Tank mix 1 part Cutrine-Plus to 2 parts Aquathol K. Apply at the rate of 2 gallons per acre-foot of water. Dilute to facilitate even distribution.
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Maintenance Control Method: Add Aquashade at the rate of 1 quart per acre-foot of water to prevent initial growth or to retard regrowth of plants after chemical treatment.
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Alternate Control Methods: Aquathol Granular: 54 to 108 pounds per acre-foot.
Aquathol K liquid: 1.3 to 2.6 gallons per acre-foot.
Clearigate: 4.4 to 8.7 gallons per acre-foot.
Reward: 2 gallons per surface acre (conditional control).
Fluridone: Various liquid or pelletized formulations (see label).
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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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