When to plant watermelons in Lawton: 4 April – 2 August

In Lawton, watermelon: sow for seedlings from 14 February to 5 July; plant into a greenhouse from 14 March to 2 August; plant out into open ground from 4 April to 2 August. For plants and seeds, the places nearby include Walmart Garden Center (garden centre, 8 km); addresses and opening hours are below.

Watermelon in Lawton: soil, season and weather

In Lawton the soil, not frost, sets the date: the last frost is over around 1 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 4 April, 34 days later.

Last spring frost	1 March
Top 7 cm of soil at 18 °C	4 April, 34 days after the last frost
Into an unheated greenhouse	14 March – 2 August; March outside: 8 °C at night, 21 °C by day; card 18–35 °C
First autumn frost	11 November, 221 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	2 June – 30 September
Days left for picking	162
Daylight	11:38 on 7 March, 12:39 on 4 April
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 5 rainy days

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

Watermelon in Lawton: care after planting

Planted on 4 April: in the first weeks water every 5 days.

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

4 April — 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 Lawton during the watermelon season

Days average above the watermelon card's 18–35 °C in July (35.8 °C) and August (35.5 °C). Nights average below 18 °C in April, May and October, November (7.3–17.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	24.5	11.7	136	8	13:02
May	28.4	17.2	128	12	13:57
June	33	22.2	68	8	14:28
July	35.8	24.7	33	5	14:16
August	35.5	24.6	43	5	13:29
September	31.5	20.6	61	6	12:26
October	25.6	14	78	6	11:21
November	18.6	7.3	40	4	10:22

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Lawton, Fort Worth is 13 days earlier and Wichita 28 days later.

City	Distance	Date	Difference
Oklahoma City	126 km	15 April – 1 August	11 days later
Fort Worth	231 km	22 March – 21 August	13 days earlier
Dallas	251 km	27 March – 26 August	8 days earlier
Tulsa	278 km	29 April – 8 August	25 days later
Wichita	357 km	2 May – 21 July	28 days later
Fort Smith	376 km	1 May – 9 August	27 days later

Where to buy watermelon plants and seeds near Lawton

Buy plants ready to set out from 4 April to 2 August (from 14 March to 2 August for an unheated greenhouse); seed for raising your own is sown from 14 February to 5 July. Within 15 km of Lawton OpenStreetMap lists 2 garden centres and 1 market (collected 29 October 2026).

Walmart Garden Center — garden centre
Northwest Quanhah Parker Trail Way 6301, 73505 Lawton · 24/7 · 8 km · walmart.com
Bedrock Nursery — garden centre
8 km
Quarry Hill AFEES — market
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