P. Rodney Thompson
Director


Address:

 

829 South Coleman
Tooele, UT 84074

Telephone Number:


Main: (435) 843-3204

 

Hours:

7:00 am - 6:00 pm
Monday - Thursday
Except Holidays
Closed Fridays

Weed Control Division - Noxious Weeds


 

Russian Knapweed
(Centaurea repens L.)


Growth Habit:
.Perennial herb, up to 3 feet tall, erect, may be in dense clumps. Greyish color.

Leaves:
Alternate, simple, of several types: Upper leaves - small, narrow, unbroken, edge; stem leaves: intermediate in size, slight toothed margins; Basal leaves: deep notched.

Stems:
Numerous branches, each ending with a single flower.

Roots:
Dark brown to black and heavily scaled.

Seeds:
Flattened, ivory colored, retained in cup-shaped seed heads.

Other:
Leaves and stems covered with short stiff hairs giving plant an appearance of knap. Spreads by seeds and creeping rootstocks.
Quackgrass

Return to Noxious Weed page.

 

 

 

 

 

 

 

 

 

 

Tooele County | 47 South Main Street | Tooele, UT 84074 | Telephone: (435) 843-3100