When to plant rhubarb in zone 4
In USDA zone 4, the last spring frost usually falls between May 1 and May 20. Plant around Apr 21 to May 28. Once established, expect to harvest around Jun 3 to Aug 6.
Zone 4 dates for rhubarb
| Sow or plant outside | Apr 21 to May 28 |
|---|---|
| Harvest | Jun 3 to Aug 6 |
| 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 rhubarb in your exact town, not just your zone.
Get my dates free →How to grow rhubarb
Tart pie stalks from a tough perennial. Read the full rhubarb growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.