Self-regenerating annual clover with the unusual habit of pushing its own seed underground after flowering. The backbone of southern Australian dryland pasture.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 7–10 | −17.8 °C to 4.4 °C | Zones where it can be grown as an annual — not a frost-tolerance rating |
| RHS hardiness rating | H5 | −15 °C to −10 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 7–9 | −12 °C and warmer | Zones where it can be grown as an annual — not a frost-tolerance rating |
| Australian (ANBG) zone | Zone 3–6 | −5 °C to 15 °C | Zones where it can be grown as an annual — not a frost-tolerance rating |
As a tender annual, Subterranean clover doesn't overwinter — the zone range shows where the growing season supports it. See the RHS rating for its actual cold tolerance.
Growing notes
- Adapted to Mediterranean climates with dry summers — the seed self-burying behaviour protects it through summer drought
- Naturalised across temperate Australia where it underpins the wool and lamb industries
- Self-regenerates year on year without re-sowing
Categories
Related plants
Cross-check Subterranean clover against your zones