When to plant watermelons in Nuevo Laredo: 3 February – 13 September

In Nuevo Laredo, watermelon: sow for seedlings from 16 December to 16 August; plant into a greenhouse from 13 January to 13 September; plant out into open ground from 3 February to 13 September.

Watermelon in Nuevo Laredo: soil, season and weather

In Nuevo Laredo frost, not soil, sets the date: the top 7 cm of soil warms to 18 °C — the minimum on the watermelon card — around 13 January, 14 days before the last frost on 27 January, so planting waits only for the week after that frost.

Last spring frost	27 January
Top 7 cm of soil at 18 °C	13 January, 14 days before the last frost
Into an unheated greenhouse	13 January – 13 September; January outside: 9.7 °C at night, 21 °C by day; card 18–35 °C
First autumn frost	23 December, 323 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	3 April – 11 November
Days left for picking	264
Daylight	10:29 on 6 January, 10:56 on 3 February
Watering outdoors when fruiting (card)	every 5 days; the driest month, February, has 3 rainy days

The same dates in Nuevo Laredo hold for Tomato, Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Nuevo Laredo: care after planting

Planted on 3 February: in the first weeks water every 5 days.

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

3 February — 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 Nuevo Laredo during the watermelon season

Days average above the watermelon card's 18–35 °C in June (36.9 °C), July (38 °C) and August (37.9 °C). Nights average below 18 °C in February, March and November, December (12.1–16.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
February	25.2	12.3	13	3	11:14
March	29.2	16.6	45	5	11:58
April	31.9	19.3	44	6	12:48
May	34.5	22.8	91	9	13:30
June	36.9	25.2	43	6	13:52
July	38	26	30	5	13:43
August	37.9	26.4	49	4	13:08
September	34.6	24.5	71	9	12:21
October	31.2	20.2	44	5	11:32
November	25.6	15.6	34	5	10:48
December	22.5	12.1	23	4	10:25

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Nuevo Laredo, Reynosa is 5 days earlier and Austin 28 days later.

City	Distance	Date	Difference
Reynosa	198 km	29 January – 13 September	5 days earlier
Corpus Christi	212 km	5 February – 13 September	2 days later
Monterrey	214 km	4 February – 13 September	1 day later
San Antonio	238 km	28 February – 26 August	25 days later
Saltillo	270 km	27 February – 17 August	24 days later
Austin	356 km	3 March – 3 September	28 days later

Where to buy watermelon plants and seeds near Nuevo Laredo

Buy plants ready to set out from 3 February to 13 September (from 13 January to 13 September for an unheated greenhouse); seed for raising your own is sown from 16 December to 16 August. Within 15 km of Nuevo Laredo OpenStreetMap lists 1 garden centre and 5 markets (collected 28 October 2026).

Pan American Courts — market
San Bernardo Avenue 3301, 78040 Laredo · 6 km
G & G Garden Center — garden centre
5 km
Pulga 359 — market
12 km
Guadalupe Market Square — 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.

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