Photo Credit: Daniel Laubahnn
Common Name: Woolly Burdock
Scientific Name: Arctium tomentosum
Habitat: disturbed areas, roadsides, farmland, forests - open areas, wet and dry grassland
Provincial Designation: Noxious
This plant was first introduced to North America from Europe. It is believed that woolly burdock was spread by large mammals after the Ice Age.
The seed pods of woolly burdock have large hooks that can attach themselves to clothing and fur and be easily transported to new habitats. The plant thrives in a wide variety of conditions and can out-compete many native species.
The pink or purple flower heads are up to 2.5 cm wide and have unique cobwebby bracts.
Its leaves are heart-shaped, green on the top side, white on the underside, and are alternately arranged along the stem.
Its stems are thick and hollow and can grow up to 3 m tall.
Learn more about this species:
See Fact Sheets - Alberta Invasive Species Council