When to plant watermelons in Syracuse (United States): 31 May – 28 July

In Syracuse (United States), watermelon: sow for seedlings from 12 April to 30 June; plant into a greenhouse from 10 May to 28 July; plant out into open ground from 31 May to 28 July. For plants and seeds, the places nearby include Barbagallo's Farm Stand (farm shop, 5 km) and The Hollow (farm shop, 12 km); addresses and opening hours are below.

Watermelon in Syracuse (United States): soil, season and weather

In Syracuse (United States) the soil, not frost, sets the date: the last frost is over around 28 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 31 May, 33 days later.

Last spring frost	28 April
Top 7 cm of soil at 18 °C	31 May, 33 days after the last frost
Into an unheated greenhouse	10 May – 28 July; May outside: 9.2 °C at night, 19.5 °C by day; card 18–35 °C
First autumn frost	6 November, 159 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	29 July – 25 September
Days left for picking	100
Daylight	14:11 on 3 May, 15:07 on 31 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 10 rainy days

The same dates in Syracuse (United States) hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Syracuse (United States): care after planting

Planted on 31 May: in the first weeks water every 5 days.

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

31 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 Syracuse (United States) during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 27.2 °C. Months that stay below 18 °C even by day on average: October (16.3 °C) and November (8.2 °C). Nights average below 18 °C in May, June and August–November (1.1–17.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.5	9.2	108	14	14:38
June	24.4	14.7	111	14	15:21
July	27.2	18	126	14	15:04
August	25.6	17.2	131	14	13:59
September	22.5	13.7	89	10	12:33
October	16.3	8.2	129	15	11:06
November	8.2	1.1	103	16	9:45

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Syracuse (United States), Buffalo is 2 days earlier and Ottawa 11 days later.

City	Distance	Date	Difference
Ithaca	74 km	31 May – 30 July	same day
Rochester	121 km	2 June – 3 August	2 days later
Albany	199 km	30 May – 28 July	1 day earlier
Buffalo	224 km	29 May – 1 August	2 days earlier
Ottawa	266 km	11 June – 23 July	11 days later
Toronto	270 km	29 May – 21 July	2 days earlier

Where to buy watermelon plants and seeds near Syracuse (United States)

Buy plants ready to set out from 31 May to 28 July (from 10 May to 28 July for an unheated greenhouse); seed for raising your own is sown from 12 April to 30 June. Within 15 km of Syracuse (United States) OpenStreetMap lists 7 garden centres, 1 plant nursery, 3 markets and 7 farm shops (collected 29 October 2026).

City Market — market
May–Oct Sun[2] 10:00–16:00 · 1 km · citymarketsyracuse.com
Downtown Farmer's Market — market
Jun–Oct Tue 07:00–15:00 · 1 km · downtownsyracuse.com
Barbagallo's Farm Stand — farm shop
Thompson Road 6287, 13206 Syracuse · 5 km
The Hollow — farm shop
Mon–Sun 09:00–18:00 · 12 km · thehollow.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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