When to plant cucumbers in Newcastle upon Tyne: 26 June – 5 September

In Newcastle upon Tyne, cucumber: sow for seedlings from 8 May to 8 August; plant into a greenhouse from 5 June to 5 September; plant out into open ground from 26 June to 5 September. For plants and seeds, the places nearby include Dobbies Garden Centre (garden centre, 11 km) and Bradley Nursery & Gardens (garden centre, 13 km); addresses and opening hours are below.

Cucumber in Newcastle upon Tyne: soil, season and weather

In Newcastle upon Tyne the soil, not frost, sets the date: the last frost is over around 8 April, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 26 June, 79 days later.

Last spring frost	8 April
Top 7 cm of soil at 18 °C	26 June, 79 days after the last frost
Into an unheated greenhouse	5 June – 5 September; June outside: 10.7 °C at night, 17.1 °C by day; card 18–25 °C
First autumn frost	20 November, 147 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	30 July – 9 October
Days left for picking	113
Daylight	16:50 on 29 May, 17:21 on 26 June
Watering outdoors when fruiting (card)	every 2 days; the driest month, June, has 12 rainy days

The same dates in Newcastle upon Tyne hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Newcastle upon Tyne: care after planting

Planted on 26 June: in the first weeks water every 4 days.

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

3 July — 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 Newcastle upon Tyne during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, July, averages 19 °C. Months that stay below 18 °C even by day on average: June and September–November (9.7–17.1 °C). Nights average below 18 °C in every month of the season, from 5 °C to 12.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	17.1	10.7	69	12	17:20
July	19	12.6	88	16	16:50
August	18.9	12.5	72	15	15:02
September	16.8	10.6	73	13	12:48
October	13.5	8.3	85	15	10:35
November	9.7	5	77	15	8:27

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Newcastle upon Tyne, Leeds is 1 day earlier and Carlisle 19 days later.

City	Distance	Date	Difference
Carlisle	86 km	15 July – 31 August	19 days later
York	118 km	26 June – 30 August	same day
Leeds	131 km	25 June – 8 September	1 day earlier
Bradford	133 km	27 June – 3 September	1 day later
Edinburgh	147 km	6 July – 25 August	10 days later
Hull	161 km	27 June – 9 September	1 day later

Where to buy cucumber plants and seeds near Newcastle upon Tyne

Buy plants ready to set out from 26 June to 5 September (from 5 June to 5 September for an unheated greenhouse); seed for raising your own is sown from 8 May to 8 August. Within 15 km of Newcastle upon Tyne OpenStreetMap lists 30 garden centres, 6 markets and 5 farm shops (collected 20 October 2026).

Dobbies Garden Centre — garden centre
Durham Road, DH3 2BQ Chester-le-Street · 11 km · dobbies.com
Bradley Nursery & Gardens — garden centre
Sled Lane, NE41 8JH Wylam · 13 km · bradley-gardens.co.uk
Laverock Hall Farm — garden centre
Tue, Thu, Sat 09:30–13:00; Sun 09:30–12:00 · 14 km · laverockhallfarm.co.uk
Bishopwearmouth Garden Centre — garden centre
Chester Road, SR4 7RS Sunderland · 15 km · bishopwearmouth.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.

Questions