Weed class: monitor list
Native to: Europe, Turkey, Caucasus
Why Is It a Noxious Weed?
This plant is on the monitor list - it is not a listed noxious weed in Washington. Please contact its sponsor Dan Conley to report locations where wall lettuce is escaping into undisturbed habitats or for more information.
How would I identify it?
Flowers are small with 5 narrow tooth-edged rays that are a pale yellow color.
Basal leaves are 2 ½ –7 inches long and 1–3 inches wide.
The smooth, erect stems grow from fibrous roots. Stems are 2–3 feet tall and branch near the top. Stems exude a milky fluid that can irritate the skin when broken.
Where does it grow?
Full sun to full shade and a variety of soil conditions. Drought resistant.
How Does it Reproduce?
Wall lettuce reproduces by seed.
For More Information
USDA PLANTS page on wall lettuce
Information on wall lettuce from Lincoln Land Conservation Trust in Massachusetts
Invasive Plant Atlas page on wall lettuce
Invasive.org page on wall lettuce