Greenly Garden

Last and first frost dates in Rostock

Germany

In Rostock the last spring frost usually comes around 14 April and the first autumn frost around 17 November, which leaves about 217 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 28 May to 28 July.

Last spring frostaround 14 April
First autumn frostaround 17 November
Frost-free days217 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 Rostock?

The last frost in Rostock usually comes around 14 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 24 March, while corn waits until 10 May. The first autumn frost follows around 17 November, about 217 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha1 March – 9 August10 April – 18 September1 May – 18 September
Ageratumfrom 12 March—from 28 May
Arugula——sow 24 March – 13 October
Basil13 April – 15 September21 May – 23 October11 June – 23 October
Beet——sow 24 March – 18 September
Bell Pepper22 March – 29 May21 May – 28 July11 June – 28 July
Black-eyed Susanfrom 7 February—from 1 May
Bok Choy6 March – 26 September10 April – 31 October1 May – 31 October
Borage——sow 21 April – 23 September
Broad bean——sow 24 March – 9 August
Broccoli——sow 24 March – 2 August
Brussels Sprouts17 January – 30 June3 March – 14 August24 March – 14 August
Busy Lizziefrom 27 January—from 21 April
Cabbage——sow 24 March – 10 July
Calendula——sow from 24 March
Carrot——sow 24 March – 25 August
Cauliflower20 January – 2 August3 March – 13 September24 March – 13 September
Celeriac23 January – 30 May10 April – 15 August1 May – 15 August
Celery23 January – 9 June10 April – 25 August1 May – 25 August
Celosiafrom 31 Marchfrom 15 Mayfrom 5 June
Chamomile——sow 24 March – 13 September
Chayote21 January – 23 May19 April – 19 August10 May – 19 August
Chickpea——sow 24 March – 30 July
Chicory6 February – 24 August—24 March – 18 September
Chili Pepper22 March – 5 July21 May – 3 September11 June – 3 September
China asterfrom 30 Marchfrom 21 Mayfrom 11 June
Chives——sow 24 March – 4 September
Cilantro——sow 24 March – 14 September
Corn——sow 10 May – 30 July
Corn poppy——sow from 24 March
Cosmosfrom 31 Marchfrom 15 Mayfrom 5 June
Cucumber23 April – 5 August21 May – 2 September11 June – 2 September
Daikon——sow 24 March – 11 September
Delphiniumfrom 3 January—from 24 March
Dill——sow 24 March – 24 September
Edging lobeliafrom 6 February—from 1 May
Eggplant22 March – 29 May21 May – 28 July11 June – 28 July
Florence fennel24 February – 9 August10 April – 23 September1 May – 23 September
Foxglovefrom 16 December—from 24 March
Garden sorrel——sow 24 March – 12 September
Green Beans——sow 5 June – 7 August
Hollyhock——sow from 24 March
Hyssop——sow 24 March – 5 August
Kale——sow 24 March – 6 September
Kiwano5 April – 12 August7 May – 13 September28 May – 13 September
Kohlrabi——sow 24 March – 16 September
Leek23 December – 21 May3 March – 30 July24 March – 30 July
Lemon balm——sow 24 March – 8 September
Lettuce——sow 24 March – 21 September
Lisianthusfrom 6 Decemberfrom 3 Marchfrom 24 March
Lovage——sow from 24 March
Luffa9 April – 6 June21 May – 18 July11 June – 18 July
Marigoldfrom 27 Februaryfrom 10 Aprilfrom 1 May
Marjoram22 March – 24 August—11 June – 23 October
Melon23 April – 23 July21 May – 20 August11 June – 20 August
Microgreens——sow 5 June – 3 November
Moringa11 April – 29 August5 June – 23 October26 June – 23 October
Moss rosefrom 3 February—from 21 April
Mustard greens——sow 24 March – 3 October
Napa cabbage8 March – 3 September10 April – 6 October1 May – 6 October
Nasturtiumfrom 3 Marchfrom 10 Aprilfrom 1 May
Okra9 April – 17 August21 May – 28 September11 June – 28 September
Oregano2 January – 14 August3 March – 13 October24 March – 13 October
Pansyfrom 6 Januaryfrom 3 Marchfrom 24 March
Parsley——sow 24 March – 2 September
Parsnip——sow 24 March – 22 July
Peanut14 April – 13 July21 May – 19 August11 June – 19 August
Peas——sow 24 March – 4 September
Petuniafrom 19 Marchfrom 21 Mayfrom 11 June
Physalis23 March – 10 July7 May – 24 August28 May – 24 August
Pumpkin9 April – 11 June21 May – 23 July11 June – 23 July
Purple coneflowerfrom 31 December—from 24 March
Radish——sow 24 March – 18 October
Sage13 January – 10 August3 March – 28 September24 March – 28 September
Scarlet sagefrom 16 March—from 28 May
Snapdragonfrom 28 Decemberfrom 3 Marchfrom 24 March
Soybean——sow 11 June – 29 August
Spinach——sow 24 March – 23 September
Stevia19 March – 1 July7 May – 19 August28 May – 19 August
Stock——sow from 24 March
Sunflower——sow from 5 June
Sweet alyssum——sow from 24 March
Sweet Corn31 March – 24 August22 April – 15 September13 May – 15 September
Sweet peafrom 20 Januaryfrom 3 Marchfrom 24 March
Sweet William——sow from 24 March
Swiss Chard——sow 24 March – 18 September
Thyme——sow 24 March – 30 July
Tomato16 March – 6 June7 May – 28 July28 May – 28 July
Turnip——sow 24 March – 20 September
Watercress——sow 24 March – 1 October
Watermelon23 April – 11 July21 May – 8 August11 June – 8 August
Zinniafrom 1 Mayfrom 5 Junefrom 26 June
Zucchini30 April – 10 August21 May – 31 August11 June – 31 August

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 Rostock

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 17 days after the last spring frost and 15 °C 44 days after it.

SoilDateAgainst the last spring frost
5 °C19 February54 days earlier
10 °C1 May17 days later
15 °C28 May44 days later
18 °C11 June58 days later

Frost dates near Rostock

Of the nearest cities on our list, the last spring frost ends earliest in Lübeck (9 April) and latest in Szczecin (22 April).

CityDistanceLast spring frostFirst autumn frost
Lübeck95 km9 April21 November
Kiel130 km9 April20 November
Hamburg151 km20 April19 November
Szczecin177 km22 April17 November
Copenhagen179 km19 April19 November

Seeds, seedlings and markets in Rostock

Within 15 km of Rostock OpenStreetMap lists 5 garden centres, 4 plant nurseries, 13 markets and 8 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Bauhaus Stadtgarten, 3 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Rostock

Frosts in Rostock usually come from about 17 November to about 14 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 Rostock by month

Average weather in Rostock over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June (21.6 °C), July (22 °C) and August (22.7 °C). Nights average below 0 °C in January (-0.2 °C) and February (-0.1 °C). About 706 mm of rain falls in a year, on 138 days; July is the wettest month (83 mm) and March the driest (42 mm).

MonthDay, °CNight, °CRain, mmRainy days
January4.3-0.26513
February5.8-0.15511
March8.60.94210
April12.43.5479
May17.28.15311
June21.612.36711
July2213.88314
August22.713.96212
September19.411.3569
October13.97.96814
November83.44911
December5.31.35913

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 18 October
Crocus18 October – end of December
Daffodil18 October – end of December
Garlic18 October – end of December
Grape hyacinthby 18 October
Helleboreby 18 October
Hyacinth18 October – end of December
Lilyby 18 October
Ornamental onionby 18 October
Peonyby 18 October
Saffronby 18 October
Snowdropby 18 October
Tulip18 October – end of December
Wild garlicby 18 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).