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Pacific Northwest Research Station
Blue Mountains National Resources Institute

Forestry and Range Sciences Laboratory
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BMNRI Home > Publications > Weeds > Common Crupina

Publications: Noxious Weeds

Explosion in Slow Motion: A talk by Jerry Asher about noxious weeds in the Blue Mountains

Click on a weed to learn about how to find it and kill it!

Common Crupina
Diffuse Knapweed
Russian Knapweed
Spotted Knapweed
Purple Loosestrife
Perennial Pepperweed
Tansy Ragwort
Medusahead Rye
Rush Skeletonweed
Yellow Starthistle
Canada Thistle
Musk Thistle
Scotch Thistle
Dalmatian Toadflax
Mediterranean Sage
St. Johnswort
Leafy Spurge
Dyers Woad

Wanted: DEAD!

Common Crupina
Alias: Bearded creeper

  • Stems: Up to 3 feet tall, sparsely leafed
  • Leaves: Basal leaves entire to slightly toothed. Stem leaves alternate, sessile, cut into numerous linear segments, rough and glandular.
  • Flowers: 3 to 5 purple; flowering period from May to July. Bracts are long and narrow, tapering to a point and borne in several overlapping rows.
  • Seeds: Seeds are the size of a wheat kernel; fruits are hairy above, with firm blackish bristles; seed leaves have a bright purple midrib.

Common crupina forms dense stands that crowd out other vegetation. Cattle will not eat it.

Control: No biological control exists for this weed yet. Consult your local Weed Board for more information.

Report all sightings to your local Weed Board

US Forest Service - Pacific Northwest Research Station, Blue Mountains National Resources Institute
Last Modified: Monday, 16 December 2013 at 14:18:43 CST

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