When to plant cucumbers in Derby: 22 June – 7 September

In Derby, cucumber: sow for seedlings from 4 May to 10 August; plant into a greenhouse from 1 June to 7 September; plant out into open ground from 22 June to 7 September. For plants and seeds, the places nearby include Hudsons Plant Centre (garden centre, 8 km) and Lane's Garden Centre and Open Farm (garden centre, 11 km); addresses and opening hours are below.

Cucumber in Derby: soil, season and weather

In Derby the soil, not frost, sets the date: the last frost is over around 12 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 22 June, 71 days later.

Last spring frost	12 April
Top 7 cm of soil at 18 °C	22 June, 71 days after the last frost
Into an unheated greenhouse	1 June – 7 September; June outside: 10.7 °C at night, 19.2 °C by day; card 18–25 °C
First autumn frost	22 November, 153 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	26 July – 11 October
Days left for picking	119
Daylight	16:17 on 25 May, 16:55 on 22 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, August, has 12 rainy days

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

Cucumber in Derby: care after planting

Planted on 22 June: in the first weeks water every 4 days.

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

29 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 Derby during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 20.9 °C. Months that stay below 18 °C even by day on average: September (17.8 °C), October (13.9 °C) and November (9.5 °C). Nights average below 18 °C in every month of the season, from 4.2 °C to 12.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	19.2	10.7	70	12	16:53
July	20.9	12.6	76	14	16:27
August	20.4	12.4	67	12	14:48
September	17.8	10.3	80	13	12:45
October	13.9	7.9	86	14	10:41
November	9.5	4.2	75	13	8:44

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Derby, Nottingham is 2 days earlier and Sheffield 7 days later.

City	Distance	Date	Difference
Nottingham	22 km	20 June – 8 September	2 days earlier
Leicester	39 km	21 June – 4 September	1 day earlier
Stoke-on-Trent	48 km	20 June – 31 August	2 days earlier
Sheffield	51 km	29 June – 7 September	7 days later
Birmingham	55 km	20 June – 4 September	2 days earlier
Coventry	57 km	21 June – 2 September	1 day earlier

Where to buy cucumber plants and seeds near Derby

Buy plants ready to set out from 22 June to 7 September (from 1 June to 7 September for an unheated greenhouse); seed for raising your own is sown from 4 May to 10 August. Within 15 km of Derby OpenStreetMap lists 19 garden centres, 1 farm-supply shop, 1 plant nursery, 5 markets and 13 farm shops (collected 20 October 2026).

Lane's Garden Centre and Open Farm — garden centre
Breaston Lane, DE72 3TT Derby · 11 km · lanesopenfarm.co.uk
Betta Fences — garden centre
Moorbridge Lane, NG9 8GR Nottingham · Mon–Thu 09:30–17:00; Fri closed; Sat 10:00–14:00; Sun closed · 14 km
Trowell Garden Centre — garden centre
Stapleford Road, NG9 3TG Nottingham · 14 km · trowellgardencentre.co.uk
Hudsons Plant Centre — garden centre
Wirksworth Road, DE56 4AQ Belper · 8 km · hudsonspc.uk

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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