When to plant tomatoes in zone 4
In USDA zone 4, the last spring frost usually falls between May 1 and May 20. Start tomatoes indoors around Mar 7 to Apr 21. Plant them out around May 16 to Jun 6. Expect to harvest around Jul 28 to Sep 15.
Zone 4 dates for tomatoes
| Start seeds indoors | Mar 7 to Apr 21 |
|---|---|
| Plant outside | May 16 to Jun 6 |
| Harvest | Jul 28 to Sep 15 |
| Typical last spring frost | May 1 to May 20 |
| 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.