University of Illinois Extension
Directory of Wildflowers - University of Illinois Extension

Directory of Wildflowers

Field Thistle
Cirsium discolor

Field Thistle
Field Thistle

Quick Profile

Exposure
Full Sun
 
Mature Height
3 - 9 Feet
 
USDA Hardiness Zones
2 - 8 
 
Native To:
Illinois
Indiana
Iowa
Michigan
Missouri
Ohio
Wisconsin
 
Soil Conditions
Moist, Well-Drained
 
Bloom Color
Lavender
Purple
 
Bloom Season
July - October
 

Features

Large, purple, thistle flowers, up to 2 inches across.

Culture

Full sun; moist, well drained soils.

Notes

Found in fields and prairies. Short lived perennial that readily re-seeds. Eastern Goldfinches eat the seeds and use the tufts of hair from seeds to line their nests. Considered a primary noxious weed in Iowa.