Tough native meadow perennial with thistle-like rose-purple flower heads on wiry stems. One of the top native plants for pollinator diversity.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 3–8 | −40 °C to −6.7 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H7 | down to −20 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 3–8 | −34 °C to −1 °C | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–5 | −15 °C to 10 °C | Plant tolerates down to this zone |
Growing notes
- Among the top five native UK plants for the diversity of pollinators it supports
- Larval and nectar plant for many species including the painted lady butterfly and six-spot burnet moth
- Late-flowering — provides nectar well into autumn when many meadow flowers are over
Categories
Related plants
Cross-check Common knapweed (Black knapweed) against your zones