When to plant eggplant 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

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Start indoors Mar 15 · Transplant May 31 · First harvest Aug 9 · Wrap by Sep 24

Last spring frostMay 10

Start seeds indoorsMar 15

Transplant outMay 31

First harvestAug 9

Last harvestSep 24

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. Eggplant is frost-sensitive, so the 3w after 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 8 weeks ahead gives strong transplants ready the moment the soil warms.

Common questions

How long does eggplant take to grow in zone 5a?

Eggplant matures in about 70–90 days from transplanting. In zone 5a that means setting plants out around May 31 and first picking around Aug 9.

Will eggplant survive frost in zone 5a?

No — eggplant is frost-sensitive. In zone 5a, wait until after the last frost (around May 10) to plant, and harvest before the first fall frost (around Oct 1).

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