When to plant rosemary in zone 7b — planting calendar

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Showing USDA Zone 7B

Growing SeasonZone 7b

Last frost ~Apr 5First frost ~Nov 1Today

Start indoorsTransplant / sowHarvestFrost risk

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOV

Start indoors Jan 25 · Transplant Apr 5 · First harvest Jun 24 · Wrap by Oct 25

Last spring frostApr 5

Start seeds indoorsJan 25

Transplant outApr 5

First harvestJun 24

Last harvestOct 25

First fall frostNov 1

Why these dates work in zone 7b

Zone 7b's last spring frost averages Apr 5 and first fall frost Nov 1 — about 210 frost-free days. Rosemary is frost-sensitive, so the around last frost timing builds in a safety margin against a late cold snap — setting plants out too early risks losing them to frost. Starting seeds indoors 10 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does rosemary take to grow in zone 7b?

Rosemary matures in about 80–100 days from transplanting. In zone 7b that means setting plants out around Apr 5 and first picking around Jun 24.

Will rosemary survive frost in zone 7b?

No — rosemary is frost-sensitive. In zone 7b, wait until after the last frost (around Apr 5) to plant, and harvest before the first fall frost (around Nov 1).

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