Cup-shaped purple, lilac or white spring bulb that opens in the first warm sun of the year. Critical pollen source for emerging queen bumblebees.
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 very first flowers of spring — a classic seasonal marker
- Critical early pollen source for emerging queen bumblebees
- Plant in drifts of a hundred or more for genuine pollinator value
- Distinct from the autumn-flowering saffron crocus (C. sativus)
Categories
Related plants
Cross-check Spring crocus against your zones