Cobwebby Thistle

Cirsium occidentale (Nutt.) Jeps. - Aster family

Size

Mature Height: Up to around 12.0 feet

Plant Type: Forb/herb

Features

Flower Color: White, Pink, Purple

Bloom Time: Winter, Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer

Conditions

Shade Tolerance: Intermediate

Ecosystem Interactions

Pollinators: Native Bees; Bombus; Beetles, Wasps, Flies; Butterflies; Larval Host (Butterfly); Larval Host (Moth); Hummingbirds

Larval Species depending on Cobwebby Thistle: Papaipema sauzalitae, Phyciodes mylitta

Native Range

  • USA:  California, Nevada, Oregon
  • MEX:  Mexico Northwest
Regional Native Status: L48 (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.