Many of the wildflowers that I see while I am out shooting did not originate her in North America. Unfortunately some of these invasive species take hold and crowd out many of the native species. Such is the case with spotted knapweed, the purple flower in the picture above. This native of Europe is on the noxious weed list here in Minnesota because of chemicals in the plant that destroy the soil. Each plant produces hundreds of seeds which enable patches of spotted knapweed to grow inhibiting native plants like common cinquefoil, the yellow flower in the picture above.