Greenly Garden

Last and first frost dates in Graz

Austria

In Graz the last spring frost usually comes around 16 April and the first autumn frost around 10 November, which leaves about 208 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 21 May to 21 July.

Last spring frostaround 16 April
First autumn frostaround 10 November
Frost-free days208 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 Graz?

The last frost in Graz 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 2 May. The first autumn frost follows around 10 November, about 208 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 – 2 August2 April – 11 September23 April – 11 September
Ageratumfrom 5 March—from 21 May
Arugula——sow 26 March – 6 October
Basil10 April – 8 September18 May – 16 October8 June – 16 October
Beet——sow 26 March – 11 September
Bell Pepper19 March – 22 May18 May – 21 July8 June – 21 July
Black-eyed Susanfrom 30 January—from 23 April
Bok Choy26 February – 19 September2 April – 24 October23 April – 24 October
Borage——sow 23 April – 16 September
Broad bean——sow 26 March – 2 August
Broccoli——sow 26 March – 26 July
Brussels Sprouts19 January – 23 June5 March – 7 August26 March – 7 August
Busy Lizziefrom 29 January—from 23 April
Cabbage——sow 26 March – 3 July
Calendula——sow from 26 March
Carrot——sow 26 March – 18 August
Cauliflower22 January – 26 July5 March – 6 September26 March – 6 September
Celeriac15 January – 23 May2 April – 8 August23 April – 8 August
Celery15 January – 2 June2 April – 18 August23 April – 18 August
Celosiafrom 23 Marchfrom 7 Mayfrom 28 May
Chamomile——sow 26 March – 6 September
Chayote13 January – 16 May11 April – 12 August2 May – 12 August
Chickpea——sow 26 March – 23 July
Chicory8 February – 17 August—26 March – 11 September
Chili Pepper19 March – 28 June18 May – 27 August8 June – 27 August
China asterfrom 27 Marchfrom 18 Mayfrom 8 June
Chives——sow 26 March – 28 August
Cilantro——sow 26 March – 7 September
Corn——sow 2 May – 23 July
Corn poppy——sow from 26 March
Cosmosfrom 23 Marchfrom 7 Mayfrom 28 May
Cucumber20 April – 29 July18 May – 26 August8 June – 26 August
Daikon——sow 26 March – 4 September
Delphiniumfrom 5 January—from 26 March
Dill——sow 26 March – 17 September
Edging lobeliafrom 29 January—from 23 April
Eggplant19 March – 22 May18 May – 21 July8 June – 21 July
Florence fennel16 February – 2 August2 April – 16 September23 April – 16 September
Foxglovefrom 18 December—from 26 March
Garden sorrel——sow 26 March – 5 September
Green Beans——sow 28 May – 31 July
Hollyhock——sow from 26 March
Hyssop——sow 26 March – 29 July
Kale——sow 26 March – 30 August
Kiwano29 March – 5 August30 April – 6 September21 May – 6 September
Kohlrabi——sow 26 March – 9 September
Leek25 December – 14 May5 March – 23 July26 March – 23 July
Lemon balm——sow 26 March – 1 September
Lettuce——sow 26 March – 14 September
Lisianthusfrom 8 Decemberfrom 5 Marchfrom 26 March
Lovage——sow from 26 March
Luffa6 April – 30 May18 May – 11 July8 June – 11 July
Marigoldfrom 19 Februaryfrom 2 Aprilfrom 23 April
Marjoram19 March – 17 August—8 June – 16 October
Melon20 April – 16 July18 May – 13 August8 June – 13 August
Microgreens——sow 28 May – 27 October
Moringa5 April – 22 August30 May – 16 October20 June – 16 October
Moss rosefrom 5 February—from 23 April
Mustard greens——sow 26 March – 26 September
Napa cabbage28 February – 27 August2 April – 29 September23 April – 29 September
Nasturtiumfrom 23 Februaryfrom 2 Aprilfrom 23 April
Okra6 April – 10 August18 May – 21 September8 June – 21 September
Oregano4 January – 7 August5 March – 6 October26 March – 6 October
Pansyfrom 8 Januaryfrom 5 Marchfrom 26 March
Parsley——sow 26 March – 26 August
Parsnip——sow 26 March – 15 July
Peanut11 April – 6 July18 May – 12 August8 June – 12 August
Peas——sow 26 March – 28 August
Petuniafrom 16 Marchfrom 18 Mayfrom 8 June
Physalis16 March – 3 July30 April – 17 August21 May – 17 August
Pumpkin6 April – 4 June18 May – 16 July8 June – 16 July
Purple coneflowerfrom 2 January—from 26 March
Radish——sow 26 March – 11 October
Sage15 January – 3 August5 March – 21 September26 March – 21 September
Scarlet sagefrom 9 March—from 21 May
Snapdragonfrom 30 Decemberfrom 5 Marchfrom 26 March
Soybean——sow 8 June – 22 August
Spinach——sow 26 March – 16 September
Stevia12 March – 24 June30 April – 12 August21 May – 12 August
Stock——sow from 26 March
Sunflower——sow from 28 May
Sweet alyssum——sow from 26 March
Sweet Corn22 March – 17 August13 April – 8 September4 May – 8 September
Sweet peafrom 22 Januaryfrom 5 Marchfrom 26 March
Sweet William——sow from 26 March
Swiss Chard——sow 26 March – 11 September
Thyme——sow 26 March – 23 July
Tomato9 March – 30 May30 April – 21 July21 May – 21 July
Turnip——sow 26 March – 13 September
Watercress——sow 26 March – 24 September
Watermelon20 April – 4 July18 May – 1 August8 June – 1 August
Zinniafrom 25 Aprilfrom 30 Mayfrom 20 June
Zucchini27 April – 3 August18 May – 24 August8 June – 24 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 Graz

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 4 days before the last spring frost and 15 °C 35 days after it.

SoilDateAgainst the last spring frost
5 °C13 March34 days earlier
10 °C12 April4 days earlier
15 °C21 May35 days later
18 °C8 June53 days later

Frost dates near Graz

Of the nearest cities on our list, the last spring frost ends earliest in Vienna (7 April) and latest in Klagenfurt (21 May).

CityDistanceLast spring frostFirst autumn frost
Klagenfurt99 km21 May24 September
Wiener Neustadt101 km19 April9 November
St. Pölten128 km8 April13 November
Villach131 km28 April11 October
Vienna145 km7 April12 November

Seeds, seedlings and markets in Graz

Within 15 km of Graz OpenStreetMap lists 24 garden centres, 5 plant nurseries, 30 markets and 47 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Samen Köller, 0 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Graz

Frosts in Graz usually come from about 10 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 Graz by month

Average weather in Graz over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (20.9–26.1 °C). Nights average below 0 °C in January (-3.8 °C), February (-2.1 °C) and December (-2.7 °C). About 855 mm of rain falls in a year, on 116 days; May is the wettest month (119 mm) and January the driest (33 mm).

MonthDay, °CNight, °CRain, mmRainy days
January4.3-3.8337
February8-2.1356
March11.50.4417
April15.84.5578
May19911915
June24.914.39913
July26.115.59413
August25.815.410812
September20.911.211011
October16.26.4568
November8.91.2619
December4.5-2.7427

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 11 October
Crocus11 October – end of December
Daffodil11 October – end of December
Garlic11 October – end of December
Grape hyacinthby 11 October
Helleboreby 11 October
Hyacinth11 October – end of December
Lilyby 11 October
Ornamental onionby 11 October
Peonyby 11 October
Saffronby 11 October
Snowdropby 11 October
Tulip11 October – end of December
Wild garlicby 11 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).