Wall Lettuce

Mycelis muralis

Wall Lettuce

Family: Asteraceae

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?

Flower Description

Flowers are small with 5 narrow tooth-edged rays that are a pale yellow color.

Leaf description

Basal leaves are 2 ½ –7 inches long and 1–3 inches wide.

Stem description

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 APHIS page on wall lettuce

CISMA page on wall lettuce

Invasive Plant Atlas page on wall lettuce

Invasive.org page on wall lettuce

Additional Photos