Asteraceae
Rydberg's thistle
Cirsium rydbergii
- Family
- Asteraceae
- Genus
- Cirsium
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (1)
- English
- Rydberg's thistle
Synonyms
- Cirsium lactucinum Rydb.
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
Photo: Thiswasnotmyintention, CC BY 4.0, from Wikimedia Commons
More in Cirsium
- Creeping thistleCirsium arvenseAsteraceae
- Spear thistleCirsium vulgareAsteraceae
- Marsh thistleCirsium palustreAsteraceae
- Cabbage thistleCirsium oleraceumAsteraceae
- Dwarf thistleCirsium acauleAsteraceae
- Woolly thistleCirsium eriophorumAsteraceae
- Melancholy thistleCirsium heterophyllumAsteraceae
- Cirsium rivulareAsteraceae
- Meadow thistleCirsium dissectumAsteraceae
- Yellow melancholy thistleCirsium erisithalesAsteraceae
- Cirsium spinosissimumAsteraceae
- Cirsium tuberosumAsteraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.