When to plant blackberries in zone 3
In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Plant around Apr 28 to Jun 10. Once established, expect to harvest around Aug 13 to Oct 28.
Zone 3 dates for blackberries
| Sow or plant outside | Apr 28 to Jun 10 |
|---|---|
| Harvest | Aug 13 to Oct 28 |
| Typical last spring frost | May 5 to May 31 |
| Typical first fall frost | around Sep 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 blackberries in your exact town, not just your zone.
Get my dates free →How to grow blackberries
Big yields — pick thornless, hardy types. Read the full blackberries growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.