When to plant zucchini in Louisville: 7 May – 25 August

In Louisville, zucchini: sow for seedlings from 26 March to 4 August; plant into a greenhouse from 16 April to 25 August; plant out into open ground from 7 May to 25 August.

Zucchini in Louisville: soil, season and weather

In Louisville the soil, not frost, sets the date: the last frost is over around 6 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 7 May, 31 days later.

Last spring frost	6 April
Top 7 cm of soil at 18 °C	7 May, 31 days after the last frost
First autumn frost	11 November, 188 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	12 June – 30 September
Days left for picking	152
Daylight	13:13 on 16 April, 13:59 on 7 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 8 rainy days

The same dates in Louisville hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Louisville: care after planting

Planted on 7 May: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Louisville during the zucchini season

About 710 mm of rain falls in the season; November is the driest month (85 mm) and July the wettest (129 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.5	14.1	118	14	14:14
June	29.3	18.7	106	11	14:49
July	31	21.3	129	14	14:35
August	29.8	20.1	86	11	13:41
September	27.6	17.2	91	7	12:28
October	21.3	11.3	95	9	11:15
November	13.6	4.1	85	8	10:07

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Louisville, Bowling Green is 3 days earlier and Indianapolis 9 days later.

City	Distance	Date	Difference
Frankfort	78 km	13 May – 17 August	6 days later
Lexington	116 km	15 May – 21 August	8 days later
Cincinnati	146 km	13 May – 23 August	6 days later
Bowling Green	153 km	4 May – 24 August	3 days earlier
Evansville	159 km	5 May – 24 August	2 days earlier
Indianapolis	173 km	16 May – 20 August	9 days later

Where to buy zucchini plants and seeds near Louisville

Buy plants ready to set out from 7 May to 25 August (from 16 April to 25 August for an unheated greenhouse); seed for raising your own is sown from 26 March to 4 August. Within 15 km of Louisville OpenStreetMap lists 1 garden centre, 1 farm-supply shop, 1 plant nursery and 7 markets (collected 20 October 2026).

Wallitsch Nursery — plant nursery
11 km
Rual king — farm supply
9 km
Logan Street Market — market
2 km · loganstmarket.com
Klondike Deli — market
11 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