When to plant tomatoes in Newcastle upon Tyne: 3 June – 31 July

In Newcastle upon Tyne, tomato: sow for seedlings from 22 March to 9 June; plant into a greenhouse from 13 May to 31 July; plant out into open ground from 3 June to 31 July. For plants and seeds, the places nearby include Gosforth Park Garden Centre (garden centre, 6 km) and Redfox Garden World (garden centre, 8 km); addresses and opening hours are below.

Tomato 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 15 °C — the minimum on the tomato card — only around 3 June, 56 days later.

Last spring frost	8 April
Top 7 cm of soil at 15 °C	3 June, 56 days after the last frost
Into an unheated greenhouse	13 May – 31 July; May outside: 7.9 °C at night, 14.3 °C by day; card 16–27 °C
First autumn frost	20 November, 170 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	12 August – 9 October
Days left for picking	100
Daylight	13:51 on 12 April, 17:02 on 3 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 12 rainy days

Tomato in Newcastle upon Tyne: care after planting

Planted on 3 June: in the first weeks water every 4 days.

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

3 June — feed: balanced (NPK)
1 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 Newcastle upon Tyne 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 °C. Months that stay below 16 °C even by day on average: October (13.5 °C) and November (9.7 °C). Nights average below 16 °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

Tomato in nearby cities

Around Newcastle upon Tyne, Leeds is 5 days earlier and Carlisle 2 days later.

City	Distance	Date	Difference
Carlisle	86 km	5 June – 26 July	2 days later
York	118 km	2 June – 25 July	1 day earlier
Leeds	131 km	29 May – 3 August	5 days earlier
Bradford	133 km	29 May – 29 July	5 days earlier
Edinburgh	147 km	3 June – 20 July	same day
Hull	161 km	2 June – 4 August	1 day earlier

Where to buy tomato plants and seeds near Newcastle upon Tyne

Buy plants ready to set out from 3 June to 31 July (from 13 May to 31 July for an unheated greenhouse); seed for raising your own is sown from 22 March to 9 June. Within 15 km of Newcastle upon Tyne OpenStreetMap lists 30 garden centres, 6 markets and 5 farm shops (collected 20 October 2026).

Green Fingers Garden Centre — garden centre
Western Approach, NE33 5QY South Shields · Mon–Sat 09:00–17:00; Sun 10:00–16:00 · 11 km · greenfingersgardencentre.co.uk
Lintzford Garden Centre — garden centre
Lintzford Road, NE39 1DG Rowlands Gill · Mon–Fri 09:00–22:00; Sat–Sun 09:00–22:00 · 13 km · lintzfordgardencentre.co.uk
Gosforth Park Garden Centre — garden centre
Great Lime Road, NE3 5EP Newcastle upon Tyne · 6 km · dobbies.com
Redfox Garden World — garden centre
Newcastle Road, NE10 8YS Gateshead · 8 km · redfoxgardenworld.co.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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