Greenly Garden

Last and first frost dates in Kiel

Germany

In Kiel the last spring frost usually comes around 9 April and the first autumn frost around 20 November, which leaves about 225 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 29 May to 31 July.

Last spring frostaround 9 April
First autumn frostaround 20 November
Frost-free days225 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 Kiel?

The last frost in Kiel usually comes around 9 April: 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 19 March, while corn waits until 10 May. The first autumn frost follows around 20 November, about 225 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha22 February – 12 August3 April – 21 September24 April – 21 September
Ageratumfrom 13 March—from 29 May
Arugula——sow 19 March – 16 October
Basil21 April – 18 September29 May – 26 October19 June – 26 October
Beet——sow 19 March – 21 September
Bell Pepper30 March – 1 June29 May – 31 July19 June – 31 July
Black-eyed Susanfrom 31 January—from 24 April
Bok Choy27 February – 29 September3 April – 3 November24 April – 3 November
Borage——sow 16 April – 26 September
Broad bean——sow 19 March – 12 August
Broccoli——sow 19 March – 5 August
Brussels Sprouts12 January – 3 July26 February – 17 August19 March – 17 August
Busy Lizziefrom 22 January—from 16 April
Cabbage——sow 19 March – 13 July
Calendula——sow from 19 March
Carrot——sow 19 March – 28 August
Cauliflower15 January – 5 August26 February – 16 September19 March – 16 September
Celeriac16 January – 2 June3 April – 18 August24 April – 18 August
Celery16 January – 12 June3 April – 28 August24 April – 28 August
Celosiafrom 1 Aprilfrom 16 Mayfrom 6 June
Chamomile——sow 19 March – 16 September
Chayote21 January – 26 May19 April – 22 August10 May – 22 August
Chickpea——sow 19 March – 2 August
Chicory1 February – 27 August—19 March – 21 September
Chili Pepper30 March – 8 July29 May – 6 September19 June – 6 September
China asterfrom 7 Aprilfrom 29 Mayfrom 19 June
Chives——sow 19 March – 7 September
Cilantro——sow 19 March – 17 September
Corn——sow 10 May – 2 August
Corn poppy——sow from 19 March
Cosmosfrom 1 Aprilfrom 16 Mayfrom 6 June
Cucumber1 May – 8 August29 May – 5 September19 June – 5 September
Daikon——sow 19 March – 14 September
Delphiniumfrom 29 December—from 19 March
Dill——sow 19 March – 27 September
Edging lobeliafrom 30 January—from 24 April
Eggplant30 March – 1 June29 May – 31 July19 June – 31 July
Florence fennel17 February – 12 August3 April – 26 September24 April – 26 September
Foxglovefrom 11 December—from 19 March
Garden sorrel——sow 19 March – 15 September
Green Beans——sow 6 June – 10 August
Hollyhock——sow from 19 March
Hyssop——sow 19 March – 8 August
Kale——sow 19 March – 9 September
Kiwano6 April – 15 August8 May – 16 September29 May – 16 September
Kohlrabi——sow 19 March – 19 September
Leek18 December – 24 May26 February – 2 August19 March – 2 August
Lemon balm——sow 19 March – 11 September
Lettuce——sow 19 March – 24 September
Lisianthusfrom 1 Decemberfrom 26 Februaryfrom 19 March
Lovage——sow from 19 March
Luffa17 April – 9 June29 May – 21 July19 June – 21 July
Marigoldfrom 20 Februaryfrom 3 Aprilfrom 24 April
Marjoram30 March – 27 August—19 June – 26 October
Melon1 May – 26 July29 May – 23 August19 June – 23 August
Microgreens——sow 6 June – 6 November
Moringa24 April – 1 September18 June – 26 October9 July – 26 October
Moss rosefrom 29 January—from 16 April
Mustard greens——sow 19 March – 6 October
Napa cabbage1 March – 6 September3 April – 9 October24 April – 9 October
Nasturtiumfrom 24 Februaryfrom 3 Aprilfrom 24 April
Okra17 April – 20 August29 May – 1 October19 June – 1 October
Oregano28 December – 17 August26 February – 16 October19 March – 16 October
Pansyfrom 1 Januaryfrom 26 Februaryfrom 19 March
Parsley——sow 19 March – 5 September
Parsnip——sow 19 March – 25 July
Peanut22 April – 16 July29 May – 22 August19 June – 22 August
Peas——sow 19 March – 7 September
Petuniafrom 27 Marchfrom 29 Mayfrom 19 June
Physalis24 March – 13 July8 May – 27 August29 May – 27 August
Pumpkin17 April – 14 June29 May – 26 July19 June – 26 July
Purple coneflowerfrom 26 December—from 19 March
Radish——sow 19 March – 21 October
Sage8 January – 13 August26 February – 1 October19 March – 1 October
Scarlet sagefrom 17 March—from 29 May
Snapdragonfrom 23 Decemberfrom 26 Februaryfrom 19 March
Soybean——sow 19 June – 1 September
Spinach——sow 19 March – 26 September
Stevia20 March – 4 July8 May – 22 August29 May – 22 August
Stock——sow from 19 March
Sunflower——sow from 6 June
Sweet alyssum——sow from 19 March
Sweet Corn3 April – 27 August25 April – 18 September16 May – 18 September
Sweet peafrom 15 Januaryfrom 26 Februaryfrom 19 March
Sweet William——sow from 19 March
Swiss Chard——sow 19 March – 21 September
Thyme——sow 19 March – 2 August
Tomato17 March – 9 June8 May – 31 July29 May – 31 July
Turnip——sow 19 March – 23 September
Watercress——sow 19 March – 4 October
Watermelon1 May – 14 July29 May – 11 August19 June – 11 August
Zinniafrom 14 Mayfrom 18 Junefrom 9 July
Zucchini8 May – 13 August29 May – 3 September19 June – 3 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 Kiel

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 15 days after the last spring frost and 15 °C 50 days after it.

SoilDateAgainst the last spring frost
5 °C11 February57 days earlier
10 °C24 April15 days later
15 °C29 May50 days later
18 °C19 June71 days later

Frost dates near Kiel

Of the nearest cities on our list, the last spring frost ends earliest in Bremen (7 April) and latest in Hamburg (20 April).

CityDistanceLast spring frostFirst autumn frost
Lübeck62 km9 April21 November
Hamburg86 km20 April19 November
Rostock130 km14 April17 November
Bremen164 km7 April19 November
Oldenburg183 km13 April19 November

Seeds, seedlings and markets in Kiel

Within 15 km of Kiel OpenStreetMap lists 11 garden centres, 1 farm-supply shop, 1 plant nursery, 9 markets and 19 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Dehner Gartencenter, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Kiel

Frosts in Kiel usually come from about 20 November to about 9 April. 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 Kiel by month

Average weather in Kiel over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June (20.9 °C), July (21.4 °C) and August (21.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 0.2 °C. About 811 mm of rain falls in a year, on 149 days; July is the wettest month (93 mm) and March the driest (54 mm).

MonthDay, °CNight, °CRain, mmRainy days
January4.50.27414
February5.90.66913
March8.61.35411
April12.13.65711
May16.786311
June20.911.97212
July21.413.39314
August21.913.66512
September18.911.56110
October13.88.28114
November8.13.75613
December5.51.86614

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 21 October
Crocus21 October – end of December
Daffodil21 October – end of December
Garlic21 October – end of December
Grape hyacinthby 21 October
Helleboreby 21 October
Hyacinth21 October – end of December
Lilyby 21 October
Ornamental onionby 21 October
Peonyby 21 October
Saffronby 21 October
Snowdropby 21 October
Tulip21 October – end of December
Wild garlicby 21 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).