Greenly Garden

Last and first frost dates in Hull

United Kingdom

In Hull the last spring frost usually comes around 28 March and the first autumn frost around 24 November, which leaves about 241 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 2 June to 4 August.

Last spring frostaround 28 March
First autumn frostaround 24 November
Frost-free days241 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Hull?

The last frost in Hull usually comes around 28 March: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 7 March, while corn waits until 10 May. The first autumn frost follows around 24 November, about 241 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha14 February – 16 August26 March – 25 September16 April – 25 September
Ageratumfrom 17 March—from 2 June
Arugula——sow 7 March – 20 October
Basil29 April – 22 September6 June – 30 October27 June – 30 October
Beet——sow 7 March – 25 September
Bell Pepper7 April – 5 June6 June – 4 August27 June – 4 August
Black-eyed Susanfrom 23 January—from 16 April
Bok Choy19 February – 3 October26 March – 7 November16 April – 7 November
Borage——sow 4 April – 30 September
Broad bean——sow 7 March – 16 August
Broccoli——sow 7 March – 9 August
Brussels Sprouts31 December – 7 July14 February – 21 August7 March – 21 August
Busy Lizziefrom 10 January—from 4 April
Cabbage——sow 7 March – 17 July
Calendula——sow from 7 March
Carrot——sow 7 March – 1 September
Cauliflower3 January – 9 August14 February – 20 September7 March – 20 September
Celeriac8 January – 6 June26 March – 22 August16 April – 22 August
Celery8 January – 16 June26 March – 1 September16 April – 1 September
Celosiafrom 11 Aprilfrom 26 Mayfrom 16 June
Chamomile——sow 7 March – 20 September
Chayote21 January – 30 May19 April – 26 August10 May – 26 August
Chickpea——sow 7 March – 6 August
Chicory20 January – 31 August—7 March – 25 September
Chili Pepper7 April – 12 July6 June – 10 September27 June – 10 September
China asterfrom 15 Aprilfrom 6 Junefrom 27 June
Chives——sow 7 March – 11 September
Cilantro——sow 7 March – 21 September
Corn——sow 10 May – 6 August
Corn poppy——sow from 7 March
Cosmosfrom 11 Aprilfrom 26 Mayfrom 16 June
Cucumber9 May – 12 August6 June – 9 September27 June – 9 September
Daikon——sow 7 March – 18 September
Delphiniumfrom 17 December—from 7 March
Dill——sow 7 March – 1 October
Edging lobeliafrom 22 January—from 16 April
Eggplant7 April – 5 June6 June – 4 August27 June – 4 August
Florence fennel9 February – 16 August26 March – 30 September16 April – 30 September
Foxglovefrom 29 November—from 7 March
Garden sorrel——sow 7 March – 19 September
Green Beans——sow 16 June – 14 August
Hollyhock——sow from 7 March
Hyssop——sow 7 March – 12 August
Kale——sow 7 March – 13 September
Kiwano10 April – 19 August12 May – 20 September2 June – 20 September
Kohlrabi——sow 7 March – 23 September
Leek6 December – 28 May14 February – 6 August7 March – 6 August
Lemon balm——sow 7 March – 15 September
Lettuce——sow 7 March – 28 September
Lisianthusfrom 19 Novemberfrom 14 Februaryfrom 7 March
Lovage——sow from 7 March
Luffa25 April – 13 June6 June – 25 July27 June – 25 July
Marigoldfrom 12 Februaryfrom 26 Marchfrom 16 April
Marjoram7 April – 31 August—27 June – 30 October
Melon9 May – 30 July6 June – 27 August27 June – 27 August
Microgreens——sow 16 June – 10 November
Moringa2 May – 5 September26 June – 30 October17 July – 30 October
Moss rosefrom 17 January—from 4 April
Mustard greens——sow 7 March – 10 October
Napa cabbage21 February – 10 September26 March – 13 October16 April – 13 October
Nasturtiumfrom 16 Februaryfrom 26 Marchfrom 16 April
Okra25 April – 24 August6 June – 5 October27 June – 5 October
Oregano16 December – 21 August14 February – 20 October7 March – 20 October
Pansyfrom 20 Decemberfrom 14 Februaryfrom 7 March
Parsley——sow 7 March – 9 September
Parsnip——sow 7 March – 29 July
Peanut30 April – 20 July6 June – 26 August27 June – 26 August
Peas——sow 7 March – 11 September
Petuniafrom 4 Aprilfrom 6 Junefrom 27 June
Physalis28 March – 17 July12 May – 31 August2 June – 31 August
Pumpkin25 April – 18 June6 June – 30 July27 June – 30 July
Purple coneflowerfrom 14 December—from 7 March
Radish——sow 7 March – 25 October
Sage27 December – 17 August14 February – 5 October7 March – 5 October
Scarlet sagefrom 21 March—from 2 June
Snapdragonfrom 11 Decemberfrom 14 Februaryfrom 7 March
Soybean——sow 27 June – 5 September
Spinach——sow 7 March – 30 September
Stevia24 March – 8 July12 May – 26 August2 June – 26 August
Stock——sow from 7 March
Sunflower——sow from 16 June
Sweet alyssum——sow from 7 March
Sweet Corn2 April – 31 August24 April – 22 September15 May – 22 September
Sweet peafrom 3 Januaryfrom 14 Februaryfrom 7 March
Sweet William——sow from 7 March
Swiss Chard——sow 7 March – 25 September
Thyme——sow 7 March – 6 August
Tomato21 March – 13 June12 May – 4 August2 June – 4 August
Turnip——sow 7 March – 27 September
Watercress——sow 7 March – 8 October
Watermelon9 May – 18 July6 June – 15 August27 June – 15 August
Zinniafrom 22 Mayfrom 26 Junefrom 17 July
Zucchini16 May – 17 August6 June – 7 September27 June – 7 September

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. 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.

When the soil warms up in Hull

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 19 days after the last spring frost and 15 °C 66 days after it.

SoilDateAgainst the last spring frost
5 °C10 January77 days earlier
10 °C16 April19 days later
15 °C2 June66 days later
18 °C27 June91 days later

Frost dates near Hull

Of the nearest cities on our list, the last spring frost ends earliest in Lincoln (United Kingdom) (1 April) and latest in Leeds (18 April).

CityDistanceLast spring frostFirst autumn frost
York54 km12 April14 November
Lincoln (United Kingdom)58 km1 April19 November
Leeds80 km18 April23 November
Sheffield85 km15 April22 November
Bradford93 km15 April18 November

Seeds, seedlings and markets in Hull

Within 15 km of Hull OpenStreetMap lists 8 garden centres, 1 plant nursery, 4 markets and 1 farm shop (collected 20 October 2026). The nearest garden centre to the city centre is Willerby Cane & Garden Centre, 7 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Hull

Frosts in Hull usually come from about 24 November to about 28 March. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Hull by month

Average weather in Hull over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: July (20.8 °C) and August (20.8 °C). No month averages below 0 °C at night; the coldest nights, in January, average 1.9 °C. About 763 mm of rain falls in a year, on 146 days; July is the wettest month (77 mm) and April the driest (48 mm).

MonthDay, °CNight, °CRain, mmRainy days
January7.11.95211
February8.72.85712
March10.33.45813
April11.94.44810
May15.57.95811
June18.611.16812
July20.8137714
August20.8136713
September18.3116712
October14.58.57413
November10.24.97012
December8.23.46713

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 25 October
Crocus25 October – end of December
Daffodil25 October – end of December
Garlic25 October – end of December
Grape hyacinthby 25 October
Helleboreby 25 October
Hyacinth25 October – end of December
Lilyby 25 October
Ornamental onionby 25 October
Peonyby 25 October
Saffronby 25 October
Snowdropby 25 October
Tulip25 October – end of December
Wild garlicby 25 October

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).