In USDA zone 5, the last spring frost usually falls between Apr 10 and May 10. Sow or plant collards around Mar 24 to May 18. Expect to harvest around Jun 11 to Nov 29.
| Sow or plant outside | Mar 24 to May 18 |
|---|---|
| Harvest | Jun 11 to Nov 29 |
| Typical last spring frost | Apr 10 to May 10 |
| Typical first fall frost | around Oct 15 |
USDA zones measure winter cold, not frost dates, so these are typical dates for the zone. Towns in the same zone can be weeks apart.
Get dates for collards in your exact town, not just your zone.
Get my dates free →Tough, forgiving greens that take heat and cold. Read the full collards growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.