DibbleWhen to plant eggplant in Zone 3
In Zone 3, the last spring frost usually passes around May 15 and the first fall frost arrives around September 15, leaving about 123 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Short, cool season. Start most warm crops indoors and protect from late frosts.
Planting windows for eggplant in Zone 3
| Task | Window |
|---|---|
| Start seeds indoors | Mar 20 to Apr 3 |
| Transplant | May 29 to Jun 12 |
| Estimated harvest | Aug 12 to Oct 11 |
The harvest estimate counts 75 days to maturity, then a picking window of about 60 days. These windows use typical frost dates for Zone 3; Dibble pins them to your exact ZIP code.
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How to grow eggplant
Eggplant craves heat, start indoors 8 weeks before last frost and transplant 2 weeks after, once the soil is warm.
Companion plants
Good neighbors for Eggplant:
Better kept apart:
Eggplant in nearby zones
Keep exploring
Eggplant: the full growing guide · The Zone 3 planting calendar · Every crop and zone
Plant at the right time this season
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.