Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Cirsium

Species:

Cirsium × rigens

Growth Characteristics

Height:

150 cm

Drought Tolerance:

Medium

Bloom Months:

jun,jul,aug

Bloom Colors:

purple, pink

Native Range

BLT, CZE, GER, Sweden, YUG

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

Deer Resistant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from root crown after fire. Common in post-fire prairie recovery.

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–30 days

Notes:

Light enhances germination. Seeds viable for several years under dry storage.

Propagation data sourced from Claude AI