Cool-season cereal with a useful double life as a cover crop. Winter-killed in cold climates, where the dead biomass becomes natural mulch protecting soil through spring.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 3–9 | −40 °C to −1.1 °C | Zones where it can be grown as an annual — not a frost-tolerance rating |
| 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 | Zones where it can be grown as an annual — not a frost-tolerance rating |
| Australian (ANBG) zone | Zone 1–5 | −15 °C to 10 °C | Zones where it can be grown as an annual — not a frost-tolerance rating |
As a tender annual, Oats doesn't overwinter — the zone range shows where the growing season supports it. See the RHS rating for its actual cold tolerance.
Growing notes
- Less allelopathic than rye — gentler precursor for small-seeded direct-sown crops
- Often sown with field peas or vetch as a "nurse" crop — the oats provide structure for the legume to climb
- Winter-kills cleanly at -5 °C or below — a feature for no-dig systems
Categories
Related plants
Cross-check Oats against your zones