Invasive native range: East Russia
Invasives
![](https://cisma-suasco.org/wp-content/uploads/2018/03/spotted-knotweed-300x201.jpg)
Spotted Knapweed (Centaurea stoebe)
Spotted knapweed, previously known as Centaurea biebersteinii, is a biennial or short-lived perennial. Its name is derived from the spots formed by black margins on the flower bract tips. Spotted knapweed typically forms a basal rosette of leaves in its first year and flowers in subsequent years. Rosette leaves are…