Greenly Garden

Last and first frost dates in Trento

Italy

In Trento the last spring frost usually comes around 4 April and the first autumn frost around 10 November, which leaves about 220 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 1 June to 21 July.

Last spring frostaround 4 April
First autumn frostaround 10 November
Frost-free days220 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 Trento?

The last frost in Trento usually comes around 4 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 14 March, while corn waits until 13 May. The first autumn frost follows around 10 November, about 220 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha24 February – 2 August5 April – 11 September26 April – 11 September
Ageratumfrom 16 March—from 1 June
Arugula——sow 14 March – 6 October
Basil21 April – 8 September29 May – 16 October19 June – 16 October
Beet——sow 14 March – 11 September
Bell Pepper30 March – 22 May29 May – 21 July19 June – 21 July
Black-eyed Susanfrom 2 February—from 26 April
Bok Choy1 March – 19 September5 April – 24 October26 April – 24 October
Borage——sow 11 April – 16 September
Broad bean——sow 14 March – 2 August
Broccoli——sow 14 March – 26 July
Brussels Sprouts7 January – 23 June21 February – 7 August14 March – 7 August
Busy Lizziefrom 17 January—from 11 April
Cabbage——sow 14 March – 3 July
Calendula——sow from 14 March
Carrot——sow 14 March – 18 August
Cauliflower10 January – 26 July21 February – 6 September14 March – 6 September
Celeriac18 January – 23 May5 April – 8 August26 April – 8 August
Celery18 January – 2 June5 April – 18 August26 April – 18 August
Celosiafrom 4 Aprilfrom 19 Mayfrom 9 June
Chamomile——sow 14 March – 6 September
Chayote24 January – 16 May22 April – 12 August13 May – 12 August
Chickpea——sow 14 March – 23 July
Chicory27 January – 17 August—14 March – 11 September
Chili Pepper30 March – 28 June29 May – 27 August19 June – 27 August
China asterfrom 7 Aprilfrom 29 Mayfrom 19 June
Chives——sow 14 March – 28 August
Cilantro——sow 14 March – 7 September
Corn——sow 13 May – 23 July
Corn poppy——sow from 14 March
Cosmosfrom 4 Aprilfrom 19 Mayfrom 9 June
Cucumber1 May – 29 July29 May – 26 August19 June – 26 August
Daikon——sow 14 March – 4 September
Delphiniumfrom 24 December—from 14 March
Dill——sow 14 March – 17 September
Edging lobeliafrom 1 February—from 26 April
Eggplant30 March – 22 May29 May – 21 July19 June – 21 July
Florence fennel19 February – 2 August5 April – 16 September26 April – 16 September
Foxglovefrom 6 December—from 14 March
Garden sorrel——sow 14 March – 5 September
Green Beans——sow 9 June – 31 July
Hollyhock——sow from 14 March
Hyssop——sow 14 March – 29 July
Kale——sow 14 March – 30 August
Kiwano9 April – 5 August11 May – 6 September1 June – 6 September
Kohlrabi——sow 14 March – 9 September
Leek13 December – 14 May21 February – 23 July14 March – 23 July
Lemon balm——sow 14 March – 1 September
Lettuce——sow 14 March – 14 September
Lisianthusfrom 26 Novemberfrom 21 Februaryfrom 14 March
Lovage——sow from 14 March
Luffa17 April – 30 May29 May – 11 July19 June – 11 July
Marigoldfrom 22 Februaryfrom 5 Aprilfrom 26 April
Marjoram30 March – 17 August—19 June – 16 October
Melon1 May – 16 July29 May – 13 August19 June – 13 August
Microgreens——sow 9 June – 27 October
Moringa11 April – 22 August5 June – 16 October26 June – 16 October
Moss rosefrom 24 January—from 11 April
Mustard greens——sow 14 March – 26 September
Napa cabbage3 March – 27 August5 April – 29 September26 April – 29 September
Nasturtiumfrom 26 Februaryfrom 5 Aprilfrom 26 April
Okra17 April – 10 August29 May – 21 September19 June – 21 September
Oregano23 December – 7 August21 February – 6 October14 March – 6 October
Pansyfrom 27 Decemberfrom 21 Februaryfrom 14 March
Parsley——sow 14 March – 26 August
Parsnip——sow 14 March – 15 July
Peanut22 April – 6 July29 May – 12 August19 June – 12 August
Peas——sow 14 March – 28 August
Petuniafrom 27 Marchfrom 29 Mayfrom 19 June
Physalis27 March – 3 July11 May – 17 August1 June – 17 August
Pumpkin17 April – 4 June29 May – 16 July19 June – 16 July
Purple coneflowerfrom 21 December—from 14 March
Radish——sow 14 March – 11 October
Sage3 January – 3 August21 February – 21 September14 March – 21 September
Scarlet sagefrom 20 March—from 1 June
Snapdragonfrom 18 Decemberfrom 21 Februaryfrom 14 March
Soybean——sow 19 June – 22 August
Spinach——sow 14 March – 16 September
Stevia23 March – 24 June11 May – 12 August1 June – 12 August
Stock——sow from 14 March
Sunflower——sow from 9 June
Sweet alyssum——sow from 14 March
Sweet Corn10 April – 17 August2 May – 8 September23 May – 8 September
Sweet peafrom 10 Januaryfrom 21 Februaryfrom 14 March
Sweet William——sow from 14 March
Swiss Chard——sow 14 March – 11 September
Thyme——sow 14 March – 23 July
Tomato20 March – 30 May11 May – 21 July1 June – 21 July
Turnip——sow 14 March – 13 September
Watercress——sow 14 March – 24 September
Watermelon1 May – 4 July29 May – 1 August19 June – 1 August
Zinniafrom 1 Mayfrom 5 Junefrom 26 June
Zucchini8 May – 3 August29 May – 24 August19 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 Trento

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 22 days after the last spring frost and 15 °C 58 days after it.

SoilDateAgainst the last spring frost
5 °C22 March13 days earlier
10 °C26 April22 days later
15 °C1 June58 days later
18 °C19 June76 days later

Frost dates near Trento

Of the nearest cities on our list, the last spring frost ends earliest in Padua (10 March) and latest in Bolzano (27 March).

CityDistanceLast spring frostFirst autumn frost
Bolzano51 km27 March16 November
Vicenza67 km16 March24 November
Verona71 km16 March27 November
Brescia92 km20 March28 November
Padua94 km10 March28 November

Seeds, seedlings and markets in Trento

Within 15 km of Trento OpenStreetMap lists 17 garden centres, 6 farm-supply shops, 2 plant nurseries, 3 markets and 11 farm shops (collected 27 October 2026). The nearest garden centre to the city centre is Vivai Brugna, 1 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Trento

Frosts in Trento usually come from about 10 November to about 4 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 Trento by month

Average weather in Trento over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June (22.4 °C), July (24.2 °C) and August (24.5 °C). Nights average below 0 °C in January (-3.1 °C), February (-1.1 °C) and December (-2.2 °C). About 1108 mm of rain falls in a year, on 136 days; May is the wettest month (155 mm) and January the driest (47 mm).

MonthDay, °CNight, °CRain, mmRainy days
January4-3.1477
February6.7-1.1698
March9.90.8729
April13.74.69613
May16.78.615520
June22.413.79715
July24.215.39315
August24.515.48812
September19.611.18611
October14.86.912310
November7.9111010
December4.5-2.2726

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).