thistle, while lovely, is a menace. Introduced to North
America from Europe early in the 20th century, it is spreading
rapidly throughout the United States. The basal rosette is
formed during the plant's first year and stays green all winter
long, killing all plants it covers. Up to 10,000 seeds are
produced by a single plant and spread by silky parachutes.
The plant is found in waste places, roadsides, neglected
pastures and railroad rights of way.
scientific name actually means nodding thistle. Another
name for this plant is Musk thistle.