When to plant cucumbers in Windsor: 27 May – 23 August

In Windsor, cucumber: sow for seedlings from 8 April to 26 July; plant into a greenhouse from 6 May to 23 August; plant out into open ground from 27 May to 23 August.

Cucumber 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 cucumber 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
Into an unheated greenhouse	6 May – 23 August; May outside: 10.6 °C at night, 20.7 °C by day; card 18–25 °C
First autumn frost	7 November, 164 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	30 June – 26 September
Days left for picking	130
Daylight	13:57 on 29 April, 14:56 on 27 May
Watering outdoors when fruiting (card)	every 2 days; the driest month, November, has 9 rainy days

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

Cucumber 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:

3 June — feed: nitrogen

Pests and diseases of cucumber 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 cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 28.6 °C. Months that stay below 18 °C even by day on average: October (17.2 °C) and November (9.1 °C). Nights average below 18 °C in May, June and September–November (2–16.5 °C).

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

Cucumber 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 – 23 August	same day
Ann Arbor	60 km	29 May – 21 August	2 days later
Toledo (United States)	84 km	24 May – 23 August	3 days earlier
Lansing	134 km	28 May – 18 August	1 day later
Cleveland	141 km	28 May – 6 September	1 day later
London (Canada)	165 km	29 May – 23 August	2 days later

Where to buy cucumber plants and seeds near Windsor

Buy plants ready to set out from 27 May to 23 August (from 6 May to 23 August for an unheated greenhouse); seed for raising your own is sown from 8 April to 26 July. 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).

The Downtown Windsor Farmers Market — market
Pelissier Street 505, N9A 4L2 Windsor · 2 km
Bert's Market Place — market
Russell Street 2727-2739;2727, 48207 Detroit · 6 km
SW Outdoor Mercado — market
West Vernor Highway 6408, 48209 Detroit · 8 km
Fresh Valley Fruit Market — market
Caniff Street 3011, 48212 Hamtramck · 12 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