Water primrose is a perennial plant that stands erect along the shoreline but also forms longrunners (up to 16 feet) that creep across wet soil or float out across the water surface.
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Water Primrose (Ludwigia spp.)


Water Primrose


Water primrose is a perennial plant that stands erect along the shoreline but also forms longrunners (up to 16 feet) that creep across wet soil or float out across the water surface. These runners form roots at their nodes. Leaves range from lance-shaped or willow-like (2 to inches long by 1/2 to 1 inch wide) on the erect stems to round or oval 91 to 2 inches in diameter on the floating stems. Leaves can be green to reddish depending on the species. The single flowers are yellow with 4 or 5 petals depending on the species. Flowers vary in size from 1 inch to 2 inches in diameter.

Water Primrose Control Options


Mechanical/Physical

Water primrose can be cut and the roots can be dug up but physical control is difficult because it can reestablish from seeds or remaining roots.

Chemical

The active ingredients that have been successful in treating water primrose include diqat (E), glyphosate (G) and imazapyr (E) E = excellent, G = good

Resources: Department of Wildlife and Fisheries Sciences, Texas A&M University



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