Archive for August 25th, 2011

Yellow Knapweed – Centaurea macrosephala

Yellow Knapweed
Yellow Knapweed

This native thistle like plant from the Caucasus’ is now spreading in North America at a rapid pace. The state of Washington has declared it a noxious weed and banned it from importation into the state. If found there it must be reported, and cannot be grown for its beautiful flowers!


These pin-cushion looking flowers are perennial and will spread easily. It will readily set its seeds and reproduce where they are not wanted, so deadhead them if you want control of where they are growing.


These big yellow, flowers are very attractive to bees and butterflies. Yet they are deer and rabbit resistant. Remember though that resistant does not mean deer or rabbit proof! The stiff long stems lend them to being cut and dried for later use in dried flower arrangements.