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Plant Identification
 

Plant Identification  --  Floating Plants  --  Yellow Water Lily

YELLOW WATER LILY (Nuphar spp.)

Common Names: patterdock,Yellow Cow Lily

Treatment Tips: The stems of water lilies treatedwith 2,4-D characteristically elongate and the leaves curl up after 1 or 2 weeks. Because of the tough nature of the leaf and petiole tissue, disappearance of the plant altogether may take some time.

Description: Leaves large, heart-shaped, commonly 8 to 16 inches (20 to 40cm) long. Leaf veins extend laterally from the midrib. Flower is bright yellow, with a single row of petals. Spreads horizontally from rhizome similar to White Water Lily

Distribution: Prefer muck or silt bottom in stagnant, shallow areas.
Recommended Control Method: Apply 150 to 200 lbs. Navigate per surface acre. Distribute granules evenly to assure effective control.
Alternate Control Methods:
2,4-D Liquid ester: (see label).
Shore-Klear: 3/4 gallon per surface acre (plus non-ionic surfactant).
Fluridone: various liquid or pelletized formulations (see label).
Note: Navigate and 2,4-D treatments are only effective early in the season on new growth. Shore-Klear should be used where plants have already reached flowering stage.



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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