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programs
Invasive Plant Guide: Meadow Knapweed
Centaurea
debeauxii
Both Meadow knapweed & Spotted
knapweed infestations occur in the
Mid Klamath area.
Meadow Knapweed Flower
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Identifying characteristics
- Flower color: white to purple
- Plant spreads via rhizomes (underground roots), that run 2-6"
below soil level, and seed. Vigorous colonizer of disturbed road
side areas where a seed bank of plants exist nearby
- Similar to Spotted knapweed
Occurrence
From 400-4000' elevation, adaptable to a variety of habitats.
Moist areas, dry roadsides, in the shade or sun.Indian Creek Road, north of Happy Camp, CA has patches of
infestation along the road from mile markers 3 to 10. Fortunately
there is only one place where a large infestation is growing near
the Indian Creek (at the 10 mile mark).
There is also a large population in and around Weitchpec.
This population is along the Highway 96 and 169, and on adjacent
private properties. MKWC is currently working with the Yurok
Tribe, CalTrans and private landowners to control the southernmost,
known, population of meadow knapweed.
Notes
If meadow knapweed seeds make it to the water they can be
transported throughout the watershed in one high water event.
Automobiles passing along this road after seed heads form are also
likely to transport this weed throughout the watershed. This
infestation threatens to spread downriver. More Info
- California Department of Food & Agriculture
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www.cdfa.ca.gov/phpps/ipc/weedinfo/centaurea.htm
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