Prairie Thistle (Cirsium discolor)
Beautiful purple flowers stand out in the summer prairie, attracting pollinators when in flower and birds for the seed. This thistle gets a bad wrap because it looks similar to some of the non-native invasive thistles, however this native species is a biennial or short-lived perennial and only spreads by seed... it is not considered aggressive at all and is an important plant of many Illinois prairies.
- Acronym: CIRDIS
- Life-Cycle: Biennial or Short-Lived Perennial
- Bloom Color: Purple
- Bloom Time: August - October
- Typical Height: 72"
- Light Preference: Full Sun
- Soil Preference: Mesic
- Root Structure: Taproot
- Stratification: None Required
- Seeds per Ounce: 6,200*
- Seeds per Packet: 50*
Other scientific names used for this species:
Other common names used for this species:
- Pasture Thistle
*Approximate, actual number of seeds may vary slightly by seed lot.