When to plant eggplants in Green Bay: 27 May – 10 July

In Green Bay, eggplant: sow for seedlings from 7 March to 11 May; plant into a greenhouse from 6 May to 10 July; plant out into open ground from 27 May to 10 July.

Eggplant in Green Bay: soil, season and weather

In Green Bay the soil, not frost, sets the date: the last frost is over around 29 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 27 May, 28 days later.

Last spring frost	29 April
Top 7 cm of soil at 18 °C	27 May, 28 days after the last frost
Into an unheated greenhouse	6 May – 10 July; May outside: 8.9 °C at night, 19.8 °C by day; card 21–29 °C
First autumn frost	30 October, 156 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	5 August – 18 September
Days left for picking	86
Daylight	12:32 on 28 March, 15:11 on 27 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 9 rainy days

The same dates in Green Bay hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Green Bay: care after planting

Planted on 27 May: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

27 May — feed: balanced (NPK)
24 June — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Green Bay during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, July, averages 28 °C. Months that stay below 21 °C even by day on average: May (19.8 °C) and October (15.4 °C). Nights average below 21 °C in every month of the season, from 7 °C to 17.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.8	8.9	91	11	14:47
June	26.1	15.3	96	12	15:32
July	28	17.8	103	11	15:14
August	26.6	17	91	11	14:05
September	23	13.8	67	9	12:34
October	15.4	7	83	11	11:03

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

All the nearest cities on our list plant eggplant later than Green Bay; the closest date is in Milwaukee, 1 day later.

City	Distance	Date	Difference
Milwaukee	165 km	28 May – 12 July	1 day later
Traverse City	192 km	5 June – 20 July	9 days later
Madison	196 km	28 May – 7 July	1 day later
Grand Rapids	256 km	28 May – 14 July	1 day later
Rockford	265 km	28 May – 8 July	1 day later
Chicago	295 km	28 May – 17 July	1 day later

Where to buy eggplant plants and seeds near Green Bay

Buy plants ready to set out from 27 May to 10 July (from 6 May to 10 July for an unheated greenhouse); seed for raising your own is sown from 7 March to 11 May. Within 15 km of Green Bay OpenStreetMap lists 6 garden centres, 1 plant nursery and 2 markets (collected 20 October 2026).

Green Bay Nursury — garden centre
4 km
Lindsley's Greenhouse — garden centre
5 km
Stein's Garden & Home — garden centre
8 km
Stein's Garden & Home — garden centre
8 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions