Larger-flowered chalk-grassland relative of common knapweed, with deeply divided leaves and showy rose-pink flower heads.
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
- Pollinator value similar to common knapweed but flowers are larger and more conspicuous
- Prefers chalk and limestone soils — a signature plant of southern English downland
- Drought tolerant once established
Categories
Related plants
Cross-check Greater knapweed against your zones