Spotted Knapweed – 6/27/10
Observer: Paul Lauenstein
Observation Date: 6/27/10
Observation Time: 8:15 p.m.
Observation Location: Gavins Pond Road-soccer parking area
Common Name: Spotted knapweed
Scientific Name: Centaurea maculosa
Comments: Knapweed is a pioneer species found in recently disturbed sites or openings. Once it has been established at a disturbed site, it continues to spread into the surrounding habitat. This species outcompetes natives through at least three methods:
- A tap root that sucks up water faster than the root systems of its neighbors,
- Quick spread through high seed production, and
- Low palatability, meaning it is less likely to be chosen as food by herbivores. It is also suspected to be allelopathic, releasing a toxin from its roots that stunts the growth of nearby plants of other species.
More Information: Wikipedia