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← How to grow lemon balm
Planting Calendar · Zone 3A

When to plant lemon balm in zone 3a

In USDA zone 3a, start lemon balm seeds indoors around Apr 18, transplant outdoors May 30, and harvest from Jul 29.

We don’t publish a planting calendar for zone 3a, because every date on one would be counted from a last-frost date this zone doesn’t reliably have. Lemon Balm takes about 60–90 days from transplanting to first picking, and that part holds anywhere. For real dates, tell us where you are below and Garzed reads ten years of weather at your own coordinates.

Why these dates work in zone 3a

Zone 3a's last spring frost averages May 30 and first fall frost Sep 10 — about 103 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. One caveat: we haven't yet checked zone 3a against the weather archive, so those frost dates are an inherited estimate rather than a measurement. Give Garzed your location and it works from that location's own ten-year record instead.

Common questions

How long does lemon balm take to grow in zone 3a?

Lemon Balm matures in about 60–90 days from transplanting. In zone 3a that means setting plants out around May 30 and first picking around Jul 29.

Will lemon balm survive frost in zone 3a?

Yes — lemon balm tolerates light frost. In zone 3a you can set plants out a little before the last frost (around May 30) and keep harvesting past the first fall frost (around Sep 10).

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