Native Plants

Plant Database

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Bransford, W.D. and Dolphia

Cirsium occidentale

Cirsium occidentale (Nutt.) Jeps.

Cobwebby Thistle

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: CIOC

USDA Native Status: L48 (N)

From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Biennial
Habit: Herb
Size Notes: Up to about 12 feet tall, often much shorter.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White , Pink , Purple
Bloom Time: Feb , Mar , Apr , May , Jun , Jul , Aug , Sep

Distribution

USA: CA , OR

Growing Conditions

Light Requirement: Sun , Part Shade

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.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

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

Metadata

Record Modified: 2022-12-23
Research By: TWC Staff

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