Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Cirsium

Species:

Cirsium congestissimum

Growth Characteristics

Height:

150 cm

Drought Tolerance:

Low

Bloom Months:

jun,jul,aug

Bloom Colors:

pink, purple

Keystone Species Ranking

Pollen Specialist Bee Keystone:

★★★★☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:

bees, butterflies, birds

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Occurs in serpentine chaparral and meadows that experience periodic fire; may resprout from root crown.

Source: deepseek-v4-flash

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–30 days

Notes:

Seeds germinate readily after cold stratification; surface sow on moist soil.

Source: deepseek-v4-flash