Globally important forage legume with a taproot that can reach 15 m. One of the most efficient nitrogen-fixers and a powerful dynamic accumulator from deep soil layers.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 3–10 | −40 °C to 4.4 °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 3–9 | −34 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–6 | −15 °C to 15 °C | Plant tolerates down to this zone |
Growing notes
- Deep taproot makes it both drought-tolerant and a major dynamic accumulator — leaves and tops are exceptional mulch material
- Major bee forage, especially the purple-flowered cultivars
- Productive stands last 4–6 years before needing reseeding
Categories
Related plants
Cross-check Alfalfa (Lucerne) against your zones