When to plant pumpkins in Windsor: 27 May – 13 July

In Windsor, pumpkin: sow for seedlings from 25 March to 1 June; plant into a greenhouse from 6 May to 13 July; plant out into open ground from 27 May to 13 July.

Pumpkin in Windsor: soil, season and weather

In Windsor 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 pumpkin card — only around 27 May, 33 days later.

Last spring frost	24 April
Top 7 cm of soil at 18 °C	27 May, 33 days after the last frost
First autumn frost	7 November, 164 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	10 August – 26 September
Days left for picking	89
Daylight	13:21 on 15 April, 14:56 on 27 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 9 rainy days

The same dates in Windsor hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Windsor: care after planting

Planted on 27 May: in the first weeks water every 4 days.

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

17 June — feed: nitrogen

Pests and diseases of pumpkin 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 Windsor during the pumpkin season

About 585 mm of rain falls in the season; November is the driest month (60 mm) and July the wettest (92 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.7	10.6	90	13	14:34
June	26.6	16.5	90	11	15:15
July	28.6	19.3	92	12	14:59
August	27.2	18.4	91	11	13:56
September	24	15.5	72	9	12:32
October	17.2	9.2	90	12	11:07
November	9.1	2	60	9	9:49

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Windsor, Toledo (United States) is 3 days earlier and Ann Arbor 2 days later.

City	Distance	Date	Difference
Detroit	4 km	27 May – 13 July	same day
Ann Arbor	60 km	29 May – 11 July	2 days later
Toledo (United States)	84 km	24 May – 13 July	3 days earlier
Lansing	134 km	28 May – 8 July	1 day later
Cleveland	141 km	28 May – 27 July	1 day later
London (Canada)	165 km	29 May – 13 July	2 days later

Where to buy pumpkin plants and seeds near Windsor

Buy plants ready to set out from 27 May to 13 July (from 6 May to 13 July for an unheated greenhouse); seed for raising your own is sown from 25 March to 1 June. Within 15 km of Windsor OpenStreetMap lists 3 garden centres, 1 farm-supply shop, 11 plant nurseries, 8 markets and 3 farm shops (collected 20 October 2026).

Hantz Woodlands — plant nursery
8 km
Hantz Woodlands — plant nursery
9 km
Srodek's Deli and Store — market
11 km
Al-Mona Market — market
13 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