Scientific Name: (Centaurea stoebe)
• A very aggressive species that can infest large areas quickly.
• Native to central Europe.
• Forms a symbiotic relationship with a certain fungus in the soil, which "steals"
carbon from surrounding plants, reducing their ability to compete.
• Knapweed loves disturbed soils and is often the first to establish.
• "Motorized vehicles are a huge contributor to the spread of knapweed. Nearly
2,000 seeds may be caught underneath a vehicle after driving through one
knapweed patch. Up to 10% of those seeds can be stuck there ten miles down
(Above) When not in flower, the well-trained eye can still can still
properly identify spotted knapweed with relative ease by the distinct
rosette it forms.