Bighead Knapweed Flower Names

This plant has no children legal status.

Bighead knapweed flower names. Are ornamental flowers with cup shaped petals rather than hair like petals on the bighead knapweed. Safflower carthamus tinctorius grown for seed oil has a very similar flower. Basal or rosette leaves are stalked and they can reach 15 inches long and three inches.

This perennial species is the tallest knapweed growing in the pacific northwest ranging from two to five feet tall depending on the habitat. Centaurea macrocephala is a species of flowering plant in the aster family asteraceae and a member of the thistle tribe cynareae it has many common names including bighead knapweed big yellow centaurea lemon fluff yellow bachelor s button yellow hardhat and armenian basketflower. This plant is listed by the u s.

Click on a place name to get a complete noxious weed. The plant stems are upright and unbranched terminating in a single flower head. Knapweed root weevil cyphocleonus achates knapweed root moth agapeta zoegana knapweed flower weevils larinus minutus and larinus obtusus etc.

Aminopyralid triclopyr clopyralid picloram clopyralid 2 4 d hand pulling russian knapweed aminopyralid triclopyr clopyralid imazapic metsulfuron methyl clopyralid 2 4 d hand pulling. Bighead knapweed subordinate taxa. Bighead knapweed billy buttons bird of paradise blazing star blue lace flower boronia bouvardia boxwood african breath of heaven diosma broom buckthorn variegated buddleia bupleurum butterfly bush butterfly orchid button funray california pepperberry calla lily campanula candytuft.

Basal rosette leaves are stalked 15 inches in length and 2 inches wide. Big head knapweed is a perennial herb that can range in height from 2 to 5 feet. It is known throughout much of the world as an introduced species.

Big head knapweed is a member of the asteraceae or sunflower family. Click below on a thumbnail map or name for species profiles. Stems of the plant are erect unbranched swollen below the flower head and covered with cobwebbed hairs.