– Short lived perennial growing from 1-foot to 3-feet tall. – Flowers are purplish-pink, urn or vase-shaped, about 1/2-inch to 1-inch tall with dark comb-like bracts under the bloom. – Knapweed ...

The Minnesota Department of Agriculture is alerting farmers and other landowners about spotted knapweed ? a nasty weed that is showing up with increasing frequency in parts of Minnesota. According to ...

Spotted knapweed (Centaurea stoebe) is found in over 3 million ha of rangeland and forests across North America, and evidence supporting the use of biological control as a regional method to reduce ...

We were driving along a beautiful grassy hillside covered in wildflowers when my wife pointed to one large bloom and said how sad it was that knapweed had invaded the field. We should have stopped to ...

The Rich brothers sell 200 knapweed flower weevils for $100, 100 knapweed root weevils for $100, or 1,000 leafy spurge flea beetles for $100. They're still refining their sorting and counting process, ...