Additional Weed Control Resources

Puncturevine

Scientific Name: Tribulus terrestris

Puncturevine is an annual weed that sprouts and grows from seed every year and then dies. Starting from the central sprouting point at the root, stems spread out radially, staying low to the ground when the plant has direct sunlight. Dense mats can form with leaf-covered stems trailing out like runners, except the plant does not send roots from these stems. Mats start small and can grow quite large to several feet in diameter. In the shade, the same thing happens but the stems can grow slightly upright instead of flat to the ground.

Tumble Mustard

Scientific Name: Sisymbrium altissimum

Tumble mustard is widespread across the Methow, mostly in open, disturbed (or burned) sites such as roadside ditches, residential areas in the shrub-steppe, ranch and Ag land, and post-fire areas.

Cheatgrass

Scientific Name: Bromus tectorum

Cheatgrass is probably the most common plant in the Columbia Basin, and it's one of the most widespread invasive (non-native) grasses in North America.

Diffuse Knapweed

Scientific Name: Centaurea diffusa

Diffuse knapweed is a biennial thistle that can mature and flower at a wide variety of heights - anywhere from a few inches to a few feet tall.

Dalmation Toadflax

Scientific Name:Linaria dalmatica

Don't be fooled by this attractive yellow snapdragon-type flower!

Russian Thistle

Scientific Name:Salsola kali (also Salsola tragus and Salsola iberica)

Russian thistle is least noticed when it is young - slender, green and soft - and most noticed when it's a large, spiny, brown tumbleweed.

Baby's Breath

Scientific Name: Gypsophila paniculata

Baby's breath is an easily recognizable addition to the Methow Valley's list of weedy plant species.

Whitetop

Scientific Name: Cardaria draba

Whitetop is a perennial, which in this case is continually expanding downward and outward.