When to plant watermelons in Evansville: 5 May – 1 August

In Evansville, watermelon: sow for seedlings from 17 March to 4 July; plant into a greenhouse from 14 April to 1 August; plant out into open ground from 5 May to 1 August. For plants and seeds, the places nearby include Kiwi's Garden Center (garden centre, 2 km) and Benton’s Garden Center (garden centre, 14 km); addresses and opening hours are below.

Watermelon in Evansville: soil, season and weather

In Evansville the soil, not frost, sets the date: the last frost is over around 2 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 5 May, 33 days later.

Last spring frost	2 April
Top 7 cm of soil at 18 °C	5 May, 33 days after the last frost
Into an unheated greenhouse	14 April – 1 August; April outside: 8.9 °C at night, 19.8 °C by day; card 18–35 °C
First autumn frost	10 November, 189 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	3 July – 29 September
Days left for picking	130
Daylight	12:51 on 7 April, 13:54 on 5 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 8 rainy days

The same dates in Evansville hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Evansville: care after planting

Planted on 5 May: in the first weeks water every 5 days.

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

5 May — feed: balanced (NPK)

Pests and diseases of watermelon 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 Evansville during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 31 °C. Months that stay below 18 °C even by day on average: November (13.5 °C). Nights average below 18 °C in May and September–November (4.4–17.8 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.7	14.8	110	14	14:13
June	29.6	19.6	94	10	14:47
July	31	21.9	104	12	14:34
August	29.8	20.7	77	10	13:40
September	27.8	17.8	77	7	12:28
October	21.4	11.6	95	8	11:16
November	13.5	4.4	74	8	10:09

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Evansville, Nashville is 2 days earlier and Indianapolis 11 days later.

City	Distance	Date	Difference
Bowling Green	148 km	4 May – 1 August	1 day earlier
Louisville	159 km	7 May – 2 August	2 days later
Nashville	214 km	3 May – 5 August	2 days earlier
Indianapolis	233 km	16 May – 28 July	11 days later
Frankfort	236 km	13 May – 25 July	8 days later
St. Louis	242 km	8 May – 26 July	3 days later

Where to buy watermelon plants and seeds near Evansville

Buy plants ready to set out from 5 May to 1 August (from 14 April to 1 August for an unheated greenhouse); seed for raising your own is sown from 17 March to 4 July. Within 15 km of Evansville OpenStreetMap lists 3 garden centres and 1 market (collected 28 October 2026).

Benton’s Garden Center — garden centre
US Highway 60 East 3000, 42420 Henderson · Mon–Fri 09:00–17:30; Sat 09:00–16:00; Sun closed · 14 km · bentonsgardencenterandsweetpeasgiftshop.com
Kiwi's Garden Center — garden centre
North 1st Avenue 100, 47710 Evansville · 2 km
Town Center North — market
East Diamond Avenue 580, 47711 · Mon–Sat 09:00–20:00 · 2 km
Goebel Farms — garden centre
15 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.

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