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Last and first frost dates in Zielona Góra

Poland

In Zielona Góra the last spring frost usually comes around 16 April and the first autumn frost around 13 November, which leaves about 211 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 9 May to 24 July.

Last spring frostaround 16 April
First autumn frostaround 13 November
Frost-free days211 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 Zielona Góra?

The last frost in Zielona Góra usually comes around 16 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 26 March, while corn waits until 24 April. The first autumn frost follows around 13 November, about 211 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha21 February – 5 August2 April – 14 September23 April – 14 September
Ageratumfrom 21 February—from 9 May
Arugula——sow 26 March – 9 October
Basil3 April – 11 September11 May – 19 October1 June – 19 October
Beet——sow 26 March – 14 September
Bell Pepper12 March – 25 May11 May – 24 July1 June – 24 July
Black-eyed Susanfrom 30 January—from 23 April
Bok Choy26 February – 22 September2 April – 27 October23 April – 27 October
Borage——sow 23 April – 19 September
Broad bean——sow 26 March – 5 August
Broccoli——sow 26 March – 29 July
Brussels Sprouts19 January – 26 June5 March – 10 August26 March – 10 August
Busy Lizziefrom 29 January—from 23 April
Cabbage——sow 26 March – 6 July
Calendula——sow from 26 March
Carrot——sow 26 March – 21 August
Cauliflower22 January – 29 July5 March – 9 September26 March – 9 September
Celeriac15 January – 26 May2 April – 11 August23 April – 11 August
Celery15 January – 5 June2 April – 21 August23 April – 21 August
Celosiafrom 11 Marchfrom 25 Aprilfrom 16 May
Chamomile——sow 26 March – 9 September
Chayote5 January – 19 May3 April – 15 August24 April – 15 August
Chickpea——sow 26 March – 26 July
Chicory8 February – 20 August—26 March – 14 September
Chili Pepper12 March – 1 July11 May – 30 August1 June – 30 August
China asterfrom 20 Marchfrom 11 Mayfrom 1 June
Chives——sow 26 March – 31 August
Cilantro——sow 26 March – 10 September
Corn——sow 24 April – 26 July
Corn poppy——sow from 26 March
Cosmosfrom 11 Marchfrom 25 Aprilfrom 16 May
Cucumber13 April – 1 August11 May – 29 August1 June – 29 August
Daikon——sow 26 March – 7 September
Delphiniumfrom 5 January—from 26 March
Dill——sow 26 March – 20 September
Edging lobeliafrom 29 January—from 23 April
Eggplant12 March – 25 May11 May – 24 July1 June – 24 July
Florence fennel16 February – 5 August2 April – 19 September23 April – 19 September
Foxglovefrom 18 December—from 26 March
Garden sorrel——sow 26 March – 8 September
Green Beans——sow 16 May – 3 August
Hollyhock——sow from 26 March
Hyssop——sow 26 March – 1 August
Kale——sow 26 March – 2 September
Kiwano17 March – 8 August18 April – 9 September9 May – 9 September
Kohlrabi——sow 26 March – 12 September
Leek25 December – 17 May5 March – 26 July26 March – 26 July
Lemon balm——sow 26 March – 4 September
Lettuce——sow 26 March – 17 September
Lisianthusfrom 8 Decemberfrom 5 Marchfrom 26 March
Lovage——sow from 26 March
Luffa30 March – 2 June11 May – 14 July1 June – 14 July
Marigoldfrom 19 Februaryfrom 2 Aprilfrom 23 April
Marjoram12 March – 20 August—1 June – 19 October
Melon13 April – 19 July11 May – 16 August1 June – 16 August
Microgreens——sow 16 May – 30 October
Moringa22 March – 25 August16 May – 19 October6 June – 19 October
Moss rosefrom 5 February—from 23 April
Mustard greens——sow 26 March – 29 September
Napa cabbage28 February – 30 August2 April – 2 October23 April – 2 October
Nasturtiumfrom 23 Februaryfrom 2 Aprilfrom 23 April
Okra30 March – 13 August11 May – 24 September1 June – 24 September
Oregano4 January – 10 August5 March – 9 October26 March – 9 October
Pansyfrom 8 Januaryfrom 5 Marchfrom 26 March
Parsley——sow 26 March – 29 August
Parsnip——sow 26 March – 18 July
Peanut4 April – 9 July11 May – 15 August1 June – 15 August
Peas——sow 26 March – 31 August
Petuniafrom 9 Marchfrom 11 Mayfrom 1 June
Physalis4 March – 6 July18 April – 20 August9 May – 20 August
Pumpkin30 March – 7 June11 May – 19 July1 June – 19 July
Purple coneflowerfrom 2 January—from 26 March
Radish——sow 26 March – 14 October
Sage15 January – 6 August5 March – 24 September26 March – 24 September
Scarlet sagefrom 25 February—from 9 May
Snapdragonfrom 30 Decemberfrom 5 Marchfrom 26 March
Soybean——sow 1 June – 25 August
Spinach——sow 26 March – 19 September
Stevia28 February – 27 June18 April – 15 August9 May – 15 August
Stock——sow from 26 March
Sunflower——sow from 16 May
Sweet alyssum——sow from 26 March
Sweet Corn19 March – 20 August10 April – 11 September1 May – 11 September
Sweet peafrom 22 Januaryfrom 5 Marchfrom 26 March
Sweet William——sow from 26 March
Swiss Chard——sow 26 March – 14 September
Thyme——sow 26 March – 26 July
Tomato25 February – 2 June18 April – 24 July9 May – 24 July
Turnip——sow 26 March – 16 September
Watercress——sow 26 March – 27 September
Watermelon13 April – 7 July11 May – 4 August1 June – 4 August
Zinniafrom 11 Aprilfrom 16 Mayfrom 6 June
Zucchini20 April – 6 August11 May – 27 August1 June – 27 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 Zielona Góra

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 23 days after it.

SoilDateAgainst the last spring frost
5 °C13 February62 days earlier
10 °C10 April6 days earlier
15 °C9 May23 days later
18 °C1 June46 days later

Frost dates near Zielona Góra

Of the nearest cities on our list, the last spring frost ends earliest in Legnica (17 April) and latest in Jelenia Góra (27 April).

CityDistanceLast spring frostFirst autumn frost
Gorzów Wielkopolski90 km21 April13 November
Legnica93 km17 April13 November
Poznań110 km21 April16 November
Jelenia Góra117 km27 April8 November
Liberec134 km25 April1 November

Seeds, seedlings and markets in Zielona Góra

Within 15 km of Zielona Góra OpenStreetMap lists 9 garden centres, 3 plant nurseries and 1 farm shop (collected 28 October 2026). The nearest garden centre to the city centre is Flora, 1 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Zielona Góra

Frosts in Zielona Góra usually come from about 13 November to about 16 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 Zielona Góra by month

Average weather in Zielona Góra over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (20.9–25 °C). Nights average below 0 °C in January (-1.7 °C) and February (-1 °C). About 633 mm of rain falls in a year, on 125 days; July is the wettest month (71 mm) and April the driest (38 mm).

MonthDay, °CNight, °CRain, mmRainy days
January3.7-1.75213
February6-15111
March9.80.84010
April14.64.3389
May19.58.85611
June24.913.96110
July24.814.87111
August25156810
September20.911.4518
October14.87.55812
November8.12.6419
December4.90.24611

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 14 October
Crocus14 October – end of December
Daffodil14 October – end of December
Garlic14 October – end of December
Grape hyacinthby 14 October
Helleboreby 14 October
Hyacinth14 October – end of December
Lilyby 14 October
Ornamental onionby 14 October
Peonyby 14 October
Saffronby 14 October
Snowdropby 14 October
Tulip14 October – end of December
Wild garlicby 14 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).