Plant Eggplant in Zone 5a
Seed-starting, transplant & harvest dates for USDA Zone 5a
Zone 5a averages 156 frost-free days, running from a last spring frost around April 30 to a first fall frost around October 3. Eggplant needs roughly 85 days from planting out to first harvest, so it uses about 54 percent of that window. Eggplant is a tender crop, which is what decides where in the window it belongs.
Because eggplant needs a head start, sow seed indoors around Mar 5, about 8 weeks ahead of the Zone 5a last frost. Transplants go out around May 14. Starting earlier than that in Zone 5a usually backfires: plants outgrow their cells and stall when they finally hit cold soil.
Fall planting: eggplant in Zone 5a
Eggplant has no useful fall window in Zone 5a. Eggplant needs a long warm run to finish, so a second planting is realistic only in zone 9 and warmer.
Eggplant needs a long warm run to finish, so a second planting is realistic only in zone 9 and warmer.
Fall dates are counted backward from the Zone 5a average first frost, not forward from a sowing date. See the fall planting calendar by zone for the full method.
Spring vs fall eggplant in Zone 5a
| Planting | Sow or start | In the ground | Harvest |
|---|---|---|---|
| Spring | Mar 5 | May 14 | Aug 7 |
| Fall | — | — | — |
Eggplant in nearby zones
Further reading on eggplant
- When to start seeds indoors by zone
Indoor start dates for eggplant, counted back from your last frost.
- Hardening off seedlings: a schedule
A day by day plan for moving eggplant seedlings outdoors.
- Best grow lights for seed starting
What light seedlings actually need, and which fixtures deliver it.
Other crops in Zone 5a
Frequently asked questions
When should I start eggplant in Zone 5a?
Start eggplant seeds indoors around Mar 5 (Zone 5a).
Can I direct sow eggplant in Zone 5a?
Eggplant is best started indoors and transplanted in Zone 5a rather than direct sown.
Can I plant eggplant in the fall in Zone 5a?
Eggplant has no useful fall window in Zone 5a. Eggplant needs a long warm run to finish, so a second planting is realistic only in zone 9 and warmer.
Will eggplant survive frost in Zone 5a?
No. Eggplant is a tender crop and a single light frost ends it, so every Zone 5a planting has to finish before the average first frost.