When to plant watermelons in Buffalo: 29 May – 1 August

In Buffalo, watermelon: sow for seedlings from 10 April to 4 July; plant into a greenhouse from 8 May to 1 August; plant out into open ground from 29 May to 1 August. For plants and seeds, the places nearby include Elbers Landscape Service (garden centre, 7 km) and Gullo's Garden Center (garden centre, 15 km); addresses and opening hours are below.

Watermelon in Buffalo: soil, season and weather

In Buffalo the soil, not frost, sets the date: the last frost is over around 24 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 35 days later.

Last spring frost	24 April
Top 7 cm of soil at 18 °C	29 May, 35 days after the last frost
Into an unheated greenhouse	8 May – 1 August; May outside: 9.4 °C at night, 19.1 °C by day; card 18–35 °C
First autumn frost	10 November, 165 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 29 September
Days left for picking	106
Daylight	14:05 on 1 May, 15:03 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 9 rainy days

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

Watermelon in Buffalo: care after planting

Planted on 29 May: in the first weeks water every 5 days.

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

29 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 Buffalo during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 26.7 °C. Months that stay below 18 °C even by day on average: October (16.2 °C) and November (8.7 °C). Nights average below 18 °C in May, June and September–November (2.2–15.3 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.1	9.4	83	12	14:38
June	24.1	15.3	84	11	15:20
July	26.7	18.7	98	13	15:03
August	25.7	18.1	94	13	13:58
September	22.9	14.9	73	9	12:33
October	16.2	9.1	103	13	11:06
November	8.7	2.2	83	12	9:46

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

2 of the nearest cities share Buffalo's date.

City	Distance	Date	Difference
Hamilton	88 km	1 June – 29 July	3 days later
Toronto	94 km	29 May – 21 July	same day
Rochester	106 km	2 June – 3 August	4 days later
Erie	130 km	30 May – 10 August	1 day later
Kitchener	145 km	31 May – 17 July	2 days later
London (Canada)	192 km	29 May – 29 July	same day

Where to buy watermelon plants and seeds near Buffalo

Buy plants ready to set out from 29 May to 1 August (from 8 May to 1 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 4 July. Within 15 km of Buffalo OpenStreetMap lists 10 garden centres and 3 markets (collected 20 October 2026).

Home Depot Garden Center — garden centre
14 km
Chandler Street Market — market
6 km · stepoutbuffalo.com
Gullo's Garden Center — garden centre
Southwestern Boulevard 4767, 14075 Hamburg · Mon–Sat 08:00–18:00; Sun 09:00–17:00 · 15 km · gullosgc.com
Elbers Landscape Service — garden centre
Main Street 2918, 14214 Buffalo · 7 km · elberslandscape.com

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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