Greenly Garden

Last and first frost dates in Bochum

Germany

In Bochum the last spring frost usually comes around 10 April and the first autumn frost around 20 November, which leaves about 224 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 13 May to 31 July.

Last spring frostaround 10 April
First autumn frostaround 20 November
Frost-free days224 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 Bochum?

The last frost in Bochum usually comes around 10 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 20 March, while corn waits until 17 April. The first autumn frost follows around 20 November, about 224 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha15 February – 12 August27 March – 21 September17 April – 21 September
Ageratumfrom 25 February—from 13 May
Arugula——sow 20 March – 16 October
Basil5 April – 18 September13 May – 26 October3 June – 26 October
Beet——sow 20 March – 21 September
Bell Pepper14 March – 1 June13 May – 31 July3 June – 31 July
Black-eyed Susanfrom 24 January—from 17 April
Bok Choy20 February – 29 September27 March – 3 November17 April – 3 November
Borage——sow 17 April – 26 September
Broad bean——sow 20 March – 12 August
Broccoli——sow 20 March – 5 August
Brussels Sprouts13 January – 3 July27 February – 17 August20 March – 17 August
Busy Lizziefrom 23 January—from 17 April
Cabbage——sow 20 March – 13 July
Calendula——sow from 20 March
Carrot——sow 20 March – 28 August
Cauliflower16 January – 5 August27 February – 16 September20 March – 16 September
Celeriac9 January – 2 June27 March – 18 August17 April – 18 August
Celery9 January – 12 June27 March – 28 August17 April – 28 August
Celosiafrom 12 Marchfrom 26 Aprilfrom 17 May
Chamomile——sow 20 March – 16 September
Chayote29 December – 26 May27 March – 22 August17 April – 22 August
Chickpea——sow 20 March – 2 August
Chicory2 February – 27 August—20 March – 21 September
Chili Pepper14 March – 8 July13 May – 6 September3 June – 6 September
China asterfrom 22 Marchfrom 13 Mayfrom 3 June
Chives——sow 20 March – 7 September
Cilantro——sow 20 March – 17 September
Corn——sow 17 April – 2 August
Corn poppy——sow from 20 March
Cosmosfrom 12 Marchfrom 26 Aprilfrom 17 May
Cucumber15 April – 8 August13 May – 5 September3 June – 5 September
Daikon——sow 20 March – 14 September
Delphiniumfrom 30 December—from 20 March
Dill——sow 20 March – 27 September
Edging lobeliafrom 23 January—from 17 April
Eggplant14 March – 1 June13 May – 31 July3 June – 31 July
Florence fennel10 February – 12 August27 March – 26 September17 April – 26 September
Foxglovefrom 12 December—from 20 March
Garden sorrel——sow 20 March – 15 September
Green Beans——sow 17 May – 10 August
Hollyhock——sow from 20 March
Hyssop——sow 20 March – 8 August
Kale——sow 20 March – 9 September
Kiwano21 March – 15 August22 April – 16 September13 May – 16 September
Kohlrabi——sow 20 March – 19 September
Leek19 December – 24 May27 February – 2 August20 March – 2 August
Lemon balm——sow 20 March – 11 September
Lettuce——sow 20 March – 24 September
Lisianthusfrom 2 Decemberfrom 27 Februaryfrom 20 March
Lovage——sow from 20 March
Luffa1 April – 9 June13 May – 21 July3 June – 21 July
Marigoldfrom 13 Februaryfrom 27 Marchfrom 17 April
Marjoram14 March – 27 August—3 June – 26 October
Melon15 April – 26 July13 May – 23 August3 June – 23 August
Microgreens——sow 17 May – 6 November
Moringa1 April – 1 September26 May – 26 October16 June – 26 October
Moss rosefrom 30 January—from 17 April
Mustard greens——sow 20 March – 6 October
Napa cabbage22 February – 6 September27 March – 9 October17 April – 9 October
Nasturtiumfrom 17 Februaryfrom 27 Marchfrom 17 April
Okra1 April – 20 August13 May – 1 October3 June – 1 October
Oregano29 December – 17 August27 February – 16 October20 March – 16 October
Pansyfrom 2 Januaryfrom 27 Februaryfrom 20 March
Parsley——sow 20 March – 5 September
Parsnip——sow 20 March – 25 July
Peanut6 April – 16 July13 May – 22 August3 June – 22 August
Peas——sow 20 March – 7 September
Petuniafrom 11 Marchfrom 13 Mayfrom 3 June
Physalis8 March – 13 July22 April – 27 August13 May – 27 August
Pumpkin1 April – 14 June13 May – 26 July3 June – 26 July
Purple coneflowerfrom 27 December—from 20 March
Radish——sow 20 March – 21 October
Sage9 January – 13 August27 February – 1 October20 March – 1 October
Scarlet sagefrom 1 March—from 13 May
Snapdragonfrom 24 Decemberfrom 27 Februaryfrom 20 March
Soybean——sow 3 June – 1 September
Spinach——sow 20 March – 26 September
Stevia4 March – 4 July22 April – 22 August13 May – 22 August
Stock——sow from 20 March
Sunflower——sow from 17 May
Sweet alyssum——sow from 20 March
Sweet Corn18 March – 27 August9 April – 18 September30 April – 18 September
Sweet peafrom 16 Januaryfrom 27 Februaryfrom 20 March
Sweet William——sow from 20 March
Swiss Chard——sow 20 March – 21 September
Thyme——sow 20 March – 2 August
Tomato1 March – 9 June22 April – 31 July13 May – 31 July
Turnip——sow 20 March – 23 September
Watercress——sow 20 March – 4 October
Watermelon15 April – 14 July13 May – 11 August3 June – 11 August
Zinniafrom 21 Aprilfrom 26 Mayfrom 16 June
Zucchini22 April – 13 August13 May – 3 September3 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 Bochum

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 6 days before the last spring frost and 15 °C 33 days after it.

SoilDateAgainst the last spring frost
5 °C19 January81 days earlier
10 °C4 April6 days earlier
15 °C13 May33 days later
18 °C3 June54 days later

Frost dates near Bochum

Of the nearest cities on our list, the last spring frost ends earliest in Düsseldorf (4 April) and latest in Hagen (26 April).

CityDistanceLast spring frostFirst autumn frost
Essen15 km6 April21 November
Dortmund18 km17 April16 November
Hagen22 km26 April18 November
Duisburg32 km5 April22 November
Düsseldorf41 km4 April21 November

Seeds, seedlings and markets in Bochum

Within 15 km of Bochum OpenStreetMap lists 29 garden centres, 5 farm-supply shops, 5 plant nurseries, 42 markets and 34 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Grüner Laden, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Bochum

Frosts in Bochum usually come from about 20 November to about 10 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 Bochum by month

Average weather in Bochum over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (20.3–23.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 0.8 °C. About 909 mm of rain falls in a year, on 160 days; January is the wettest month (96 mm) and April the driest (64 mm).

MonthDay, °CNight, °CRain, mmRainy days
January5.60.89617
February7.91.68113
March10.82.86913
April14.44.96411
May18.88.96612
June23.113.47311
July23.614.37313
August23.914.76713
September20.311.77912
October15.49.18214
November9.64.27014
December6.92.68917

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).