When to plant rhubarb in zone 6b — planting calendar

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Showing USDA Zone 6B

Growing SeasonZone 6b

Last frost ~Apr 20First frost ~Oct 15Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCT

Transplant Apr 6 · First harvest Oct 6 · Wrap by Oct 15

Last spring frostApr 20

Transplant outApr 6

First harvestOct 6

Last harvestOct 15

First fall frostOct 15

Why these dates work in zone 6b

Zone 6b's last spring frost averages Apr 20 and first fall frost Oct 15 — about 178 frost-free days. Rhubarb tolerates light frost, so you can set plants out ahead of the last-frost date and keep harvesting into the cooler fall.

Common questions

How long does rhubarb take to grow in zone 6b?

Rhubarb matures in about 548–730 days from transplanting. In zone 6b that means setting plants out around Apr 6 and first picking around Oct 6.

Will rhubarb survive frost in zone 6b?

Yes — rhubarb tolerates light frost. In zone 6b you can set plants out a little before the last frost (around Apr 20) and keep harvesting past the first fall frost (around Oct 15).

For soil, spacing, pests and companion planting, see the full rhubarb growing guide →