When to plant tomatoes in zone 3
In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Start tomatoes indoors around Mar 14 to Apr 28. Plant them out around May 23 to Jun 13. Expect to harvest around Aug 4 to Sep 15.
Zone 3 dates for tomatoes
| Start seeds indoors | Mar 14 to Apr 28 |
|---|---|
| Plant outside | May 23 to Jun 13 |
| Harvest | Aug 4 to Sep 15 |
| 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 tomatoes in your exact town, not just your zone.
Get my dates free →How to grow tomatoes
Summer staple — wait for warmth, then feast. Read the full tomatoes growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.