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Cirsium scariosum (Meadow thistle) | NPIN

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Cirsium scariosum

Cirsium scariosum Nutt.

Meadow thistle

Asteraceae (Aster Family)

Synonym(s): Carduus americanus, Carduus coloradensis, Cirsium acaule var. americanum, Cirsium acaulescens, Cirsium americanum, Cirsium butleri, Cirsium coloradense, Cirsium coloradense ssp. acaulescens, Cirsium coloradense ssp. longissimum, Cirsium congdonii, Cirsium drummondii ssp. lanatum, Cirsium drummondii ssp. latisquamum, Cirsium drummondii ssp. vexans, Cirsium drummondii var. acaulescens, Cirsium drummondii var. oregonense, Cirsium erosum, Cirsium kelseyi, Cirsium lacerum, Cirsium magnificum, Cirsium minganense, Cirsium oreophilum, Cirsium quercetorum var. citrinum, Cirsium scariosum var. scariosum, Cirsium scariosum var. thorneae, Cirsium tioganum, Cirsium tioganum var. coloradense, Cirsium tioganum var. tioganum, Cirsium ×erosum, Cnicus drummondii var. acaulescens, Cnicus tioganus

USDA Symbol: cisc2

USDA Native Status: L48 (N), CAN (N)

Meadow Thistle is a member of the aster family (family Asteraceae) which includes herbs, sometimes shrubs or vines, rarely trees, with simple or compound, alternate or opposite leaves. Flowers small, but organized into larger heads resembling a single, radially symmetrical flower cupped by a ring of green bracts. Flower-like heads: tiny, radially symmetrical central flowers form the disk; larger flowers around the edge, the rays, strap-shaped and resembling petals; however, all flowers in one had may be disk flowers or rays.


From the Image Gallery

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Plant Characteristics

Duration: Biennial
Habit: Herb

Bloom Information

Bloom Color: White , Pink , Purple


USA: ID , MT , OR , UT , WA , WY
Canada: AB , BC , QC

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Provides Nesting Materials/Structure for Native Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

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Additional resources

USDA: Find Cirsium scariosum in USDA Plants
FNA: Find Cirsium scariosum in the Flora of North America (if available)
Google: Search Google for Cirsium scariosum


Record Modified: 2007-01-01
Research By: TWC Staff

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