When to plant lemon balm in zone 5a — planting calendar

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Showing USDA Zone 5A

Growing SeasonZone 5a

Last frost ~May 10First frost ~Oct 1Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUNJULAUGSEPOCT

Start indoors Mar 29 · Transplant May 10 · First harvest Jul 9 · Wrap by Oct 1

Last spring frostMay 10

Start seeds indoorsMar 29

Transplant outMay 10

First harvestJul 9

Last harvestOct 1

First fall frostOct 1

Why these dates work in zone 5a

Zone 5a's last spring frost averages May 10 and first fall frost Oct 1 — about 144 frost-free days. Lemon Balm tolerates light frost, so you can set plants out ahead of the last-frost date and keep harvesting into the cooler fall. Starting seeds indoors 6 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does lemon balm take to grow in zone 5a?

Lemon Balm matures in about 60–90 days from transplanting. In zone 5a that means setting plants out around May 10 and first picking around Jul 9.

Will lemon balm survive frost in zone 5a?

Yes — lemon balm tolerates light frost. In zone 5a you can set plants out a little before the last frost (around May 10) and keep harvesting past the first fall frost (around Oct 1).

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