Department Header For Noxious Weed Division
Yellowstone County, Montana
Noxious Weed
Weed Information Contact Department

Perennial Pepperweed
(Lepidium latifolium)


Perennial Pepperweed

Photo from Weeds of the West, revised edition.

Perennial Pepperweed Rosetta

Perennial Pepperweed Steam

Perennial Pepperweed Leaf

Perennial Pepperweed Bloom

Perennial Pepperweed Plant 1

Perennial Pepperweed Plant 2


Growth Habit: Perennial, 1 to 3 feet in height

Leaves: Leaves are lanceolate, bright green to gray-green, entire toothed, basal leaves larger than upper leaves, inflorescence a raceme.

Stem: 1 to 3 feet in height

Flower: Flowers are white, in dense clusters near ends of branches, very small

Roots: Deep-seated rootstocks and creeping rhizomes, very difficult to control.

Seeds: 2 seeds per fruit, fruit is a silicle, rounded, flattened, slightly hairy, about 1/16 inch long, and reddish-brown.

Reproduction: By seed and creeping rhizomes.

Habitat: Grows in waste areas, wet areas, ditches, roadsides, and cropland.

Biological control:

Herbicides: 2,4 - D amine, Escort, Telar

Video Supplied By Montana Weed Control Association