When to plant watermelons in Wichita: 2 May – 21 July

In Wichita, watermelon: sow for seedlings from 14 March to 23 June; plant into a greenhouse from 11 April to 21 July; plant out into open ground from 2 May to 21 July. For plants and seeds, the places nearby include Cox Farm (farm shop, 12 km); addresses and opening hours are below.

Watermelon in Wichita: soil, season and weather

In Wichita the soil, not frost, sets the date: the last frost is over around 3 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 2 May, 29 days later.

Last spring frost	3 April
Top 7 cm of soil at 18 °C	2 May, 29 days after the last frost
Into an unheated greenhouse	11 April – 21 July; April outside: 8.6 °C at night, 21 °C by day; card 18–35 °C
First autumn frost	30 October, 181 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	30 June – 18 September
Days left for picking	122
Daylight	12:43 on 4 April, 13:46 on 2 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 7 rainy days

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

Watermelon in Wichita: care after planting

Planted on 2 May: in the first weeks water every 5 days.

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

2 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 Wichita during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 32.6 °C. Nights average below 18 °C in May (14.1 °C) and October (10.9 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.7	14.1	177	14	14:11
June	30.8	20.3	111	10	14:45
July	32.6	22.3	76	10	14:32
August	31.5	21.4	86	9	13:39
September	28.5	18.3	72	7	12:28
October	21.6	10.9	86	7	11:16

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Wichita, Oklahoma City is 17 days earlier and Kansas City 5 days later.

City	Distance	Date	Difference
Topeka	207 km	6 May – 20 July	4 days later
Tulsa	209 km	29 April – 8 August	3 days earlier
Dodge City	236 km	4 May – 20 July	2 days later
Oklahoma City	247 km	15 April – 1 August	17 days earlier
Joplin	259 km	5 May – 23 July	3 days later
Kansas City	287 km	7 May – 23 July	5 days later

Where to buy watermelon plants and seeds near Wichita

Buy plants ready to set out from 2 May to 21 July (from 11 April to 21 July for an unheated greenhouse); seed for raising your own is sown from 14 March to 23 June. Within 15 km of Wichita OpenStreetMap lists 5 garden centres, 1 farm-supply shop, 1 plant nursery, 2 markets and 1 farm shop (collected 20 October 2026).

Cox Farm — farm shop
South Seneca Street 6059, 67217 Wichita · Mon–Sat 10:00–18:00 · 12 km · coxfarm.com
Graden — garden centre
5 km
Walmart Garden Center — garden centre
5 km
Walmart Garden Center — garden centre
7 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