When to plant tomatoes in Carlisle: 5 June – 26 July

In Carlisle, tomato: sow for seedlings from 24 March to 4 June; plant into a greenhouse from 15 May to 26 July; plant out into open ground from 5 June to 26 July. For plants and seeds, the places nearby include Houghton Hall Garden Centre (garden centre, 5 km) and Aero Nurseries Garden & Aquatic Centre (garden centre, 6 km); addresses and opening hours are below.

Tomato in Carlisle: soil, season and weather

In Carlisle the soil, not frost, sets the date: the last frost is over around 26 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 5 June, 40 days later.

Last spring frost	26 April
Top 7 cm of soil at 15 °C	5 June, 40 days after the last frost
Into an unheated greenhouse	15 May – 26 July; May outside: 7.2 °C at night, 15.9 °C by day; card 16–27 °C
First autumn frost	15 November, 163 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	14 August – 4 October
Days left for picking	93
Daylight	14:00 on 14 April, 17:05 on 5 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 16 rainy days

Tomato in Carlisle: care after planting

Planted on 5 June: in the first weeks water every 4 days.

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

5 June — feed: balanced (NPK)
3 July — feed: nitrogen

Pests and diseases of tomato 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 Carlisle during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 19.1 °C. Months that stay below 16 °C even by day on average: October (13.2 °C) and November (9.3 °C). Nights average below 16 °C in every month of the season, from 3.8 °C to 11.9 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	18.1	10.4	107	16	17:19
July	19.1	11.9	132	18	16:49
August	18.6	11.8	136	18	15:01
September	16.6	9.9	118	17	12:48
October	13.2	7.5	131	17	10:35
November	9.3	3.8	112	15	8:27

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Carlisle, Bradford is 7 days earlier and Stirling 12 days later.

City	Distance	Date	Difference
Newcastle upon Tyne	86 km	3 June – 31 July	2 days earlier
Edinburgh	119 km	3 June – 20 July	2 days earlier
Glasgow	136 km	3 June – 22 July	2 days earlier
Bradford	145 km	29 May – 29 July	7 days earlier
Stirling	151 km	17 June – 20 July	12 days later
Leeds	151 km	29 May – 3 August	7 days earlier

Where to buy tomato plants and seeds near Carlisle

Buy plants ready to set out from 5 June to 26 July (from 15 May to 26 July for an unheated greenhouse); seed for raising your own is sown from 24 March to 4 June. Within 15 km of Carlisle OpenStreetMap lists 7 garden centres, 2 farm-supply shops, 1 plant nursery and 1 farm shop (collected 28 October 2026).

Houghton Hall Garden Centre — garden centre
Mon–Wed, Fri, Sat 09:00–18:00; Thu 09:00–19:30; Sun 10:30–16:30 · 5 km
Aero Nurseries Garden & Aquatic Centre — garden centre
Harker Road Ends, CA6 4HQ Carlisle · 6 km
Whitesyke Garden Centre — garden centre
Brampton Road, CA6 5TR · 12 km
Tarn Road Nursery — garden centre
Mon–Sun 10:00–04:00 · 15 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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