When to plant cucumbers in Rochester: 2 June – 28 August

In Rochester, cucumber: sow for seedlings from 14 April to 31 July; plant into a greenhouse from 12 May to 28 August; plant out into open ground from 2 June to 28 August. For plants and seeds, the places nearby include Hydro Garden Center (garden centre, 3 km) and Clover Nursery and Garden Center (garden centre, 7 km); addresses and opening hours are below.

Cucumber in Rochester: soil, season and weather

In Rochester the soil, not frost, sets the date: the last frost is over around 20 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 2 June, 43 days later.

Last spring frost	20 April
Top 7 cm of soil at 18 °C	2 June, 43 days after the last frost
Into an unheated greenhouse	12 May – 28 August; May outside: 9.8 °C at night, 18.3 °C by day; card 18–25 °C
First autumn frost	12 November, 163 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	6 July – 1 October
Days left for picking	129
Daylight	14:16 on 5 May, 15:10 on 2 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, September, has 10 rainy days

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

Cucumber in Rochester: care after planting

Planted on 2 June: in the first weeks water every 4 days.

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

9 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 Rochester during the cucumber season

No month of the season averages above the cucumber 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 (16.9 °C) and November (9.4 °C). Nights average below 18 °C in June and September–November (2.9–15.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24	15.6	79	11	15:22
July	27.2	19.2	98	12	15:05
August	26.2	18.6	92	13	13:59
September	23.2	15.3	76	10	12:33
October	16.9	9.8	123	14	11:06
November	9.4	2.9	90	14	9:44

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

All the nearest cities on our list plant cucumber earlier than Rochester; the closest date is in Hamilton, 1 day earlier.

City	Distance	Date	Difference
Buffalo	106 km	29 May – 26 August	4 days earlier
Syracuse (United States)	121 km	31 May – 22 August	2 days earlier
Ithaca	121 km	31 May – 24 August	2 days earlier
Toronto	153 km	29 May – 15 August	4 days earlier
Hamilton	181 km	1 June – 23 August	1 day earlier
Erie	231 km	30 May – 4 September	3 days earlier

Where to buy cucumber plants and seeds near Rochester

Buy plants ready to set out from 2 June to 28 August (from 12 May to 28 August for an unheated greenhouse); seed for raising your own is sown from 14 April to 31 July. Within 15 km of Rochester OpenStreetMap lists 8 garden centres, 7 markets and 2 farm shops (collected 20 October 2026).

Clover Nursery and Garden Center — garden centre
North Landing Road 485, 14625 Rochester · 7 km
Aman's Farm & Market — garden centre
East Ridge Road 2458, 14622 Rochester · 8 km
Hydro Garden Center — garden centre
Lyell Avenue 1069, 14606 Rochester · 3 km
Crosman Seeds Factory Store — garden centre
West Commercial Street 511, 14445 East Rochester · 11 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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