Floating Primrose-Willow
Ludwigia peploides
Plant Description
Aquatic herbaceous perennial. Forms dense mats. Showy yellow 5-petalled flowers; lance-to egg-shaped alternate leaves up to 3.5 inches long. Fleshy reddish stems float on water.
Plant Details
| Life Forms | |
|---|---|
| Habitats | |
| ODA Listing | |
| Soil and Moisture Conditions | |
| Suggested Actions | |
| Shade Preference | |
| Mature Height | up to 10 feet deep |
| Distribution | Present in the Willamette River and its tributaries. Also found in Washington, California, eastern and southern US, Mexico, South America, Western Europe, and Australia. |
| Control | prevention is the best strategy. This plant may still be sold on the internet for Ponds and aquariums - do not purchase, or if found in your aquarium, do not dump it in another waterbody. Small patches can be removed manually; take care to remove all stem and root fragments. |
| Disposal Methods | Dispose of plants in the garbage in sealed plastic bags. |
| Reproduction and Spread | Mostly spreads through fragmentation and creates new populations as it floats/moves downstream. Can also reproduce via seed. |
| Introduced | This species is native ato parts of the Usas well as Mexico, Central, and South America, but is invasive in Oregon and Washington. |
| Look Alikes | Native Ludwigia palustris and invasive Ludwigia hexapetala. |
| Impact | Clogs Waterways, degrades wildlife habitat, negatively impacts water quality and Aquatic recreation. |
| More Info |
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