Architectural southern European perennial with deeply cut spiny grey-green leaves and steel-blue spherical flower heads on tall stems in midsummer.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 3–9 | −40 °C to −1.1 °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 2–6 | −10 °C to 15 °C | Plant tolerates down to this zone |
Growing notes
- Flowers July–August — peak midsummer marker
- Outstanding bee forage — flower heads buzz audibly with bumblebees at peak flowering
- Drought tolerant — excellent for hot dry borders and gravel gardens
- Architectural seed heads persist into autumn
Categories
Related plants
Cross-check Small globe thistle against your zones