Greenly Garden

Last and first frost dates in Potenza

Italy

In Potenza the last spring frost usually comes around 15 April and the first autumn frost around 25 November, which leaves about 224 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 29 May to 5 August.

Last spring frostaround 15 April
First autumn frostaround 25 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 Potenza?

The last frost in Potenza usually comes around 15 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 25 March, while corn waits until 9 May. The first autumn frost follows around 25 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
Achocha22 February – 17 August3 April – 26 September24 April – 26 September
Ageratumfrom 13 March—from 29 May
Arugula——sow 25 March – 21 October
Basil16 April – 23 September24 May – 31 October14 June – 31 October
Beet——sow 25 March – 26 September
Bell Pepper25 March – 6 June24 May – 5 August14 June – 5 August
Black-eyed Susanfrom 31 January—from 24 April
Bok Choy27 February – 4 October3 April – 8 November24 April – 8 November
Borage——sow 22 April – 1 October
Broad bean——sow 25 March – 17 August
Broccoli——sow 25 March – 10 August
Brussels Sprouts18 January – 8 July4 March – 22 August25 March – 22 August
Busy Lizziefrom 28 January—from 22 April
Cabbage——sow 25 March – 18 July
Calendula——sow from 25 March
Carrot——sow 25 March – 2 September
Cauliflower21 January – 10 August4 March – 21 September25 March – 21 September
Celeriac16 January – 7 June3 April – 23 August24 April – 23 August
Celery16 January – 17 June3 April – 2 September24 April – 2 September
Celosiafrom 27 Marchfrom 11 Mayfrom 1 June
Chamomile——sow 25 March – 21 September
Chayote20 January – 31 May18 April – 27 August9 May – 27 August
Chickpea——sow 25 March – 7 August
Chicory7 February – 1 September—25 March – 26 September
Chili Pepper25 March – 13 July24 May – 11 September14 June – 11 September
China asterfrom 2 Aprilfrom 24 Mayfrom 14 June
Chives——sow 25 March – 12 September
Cilantro——sow 25 March – 22 September
Corn——sow 9 May – 7 August
Corn poppy——sow from 25 March
Cosmosfrom 27 Marchfrom 11 Mayfrom 1 June
Cucumber26 April – 13 August24 May – 10 September14 June – 10 September
Daikon——sow 25 March – 19 September
Delphiniumfrom 4 January—from 25 March
Dill——sow 25 March – 2 October
Edging lobeliafrom 30 January—from 24 April
Eggplant25 March – 6 June24 May – 5 August14 June – 5 August
Florence fennel17 February – 17 August3 April – 1 October24 April – 1 October
Foxglovefrom 17 December—from 25 March
Garden sorrel——sow 25 March – 20 September
Green Beans——sow 1 June – 15 August
Hollyhock——sow from 25 March
Hyssop——sow 25 March – 13 August
Kale——sow 25 March – 14 September
Kiwano6 April – 20 August8 May – 21 September29 May – 21 September
Kohlrabi——sow 25 March – 24 September
Leek24 December – 29 May4 March – 7 August25 March – 7 August
Lemon balm——sow 25 March – 16 September
Lettuce——sow 25 March – 29 September
Lisianthusfrom 7 Decemberfrom 4 Marchfrom 25 March
Lovage——sow from 25 March
Luffa12 April – 14 June24 May – 26 July14 June – 26 July
Marigoldfrom 20 Februaryfrom 3 Aprilfrom 24 April
Marjoram25 March – 1 September—14 June – 31 October
Melon26 April – 31 July24 May – 28 August14 June – 28 August
Microgreens——sow 1 June – 11 November
Moringa7 April – 6 September1 June – 31 October22 June – 31 October
Moss rosefrom 4 February—from 22 April
Mustard greens——sow 25 March – 11 October
Napa cabbage1 March – 11 September3 April – 14 October24 April – 14 October
Nasturtiumfrom 24 Februaryfrom 3 Aprilfrom 24 April
Okra12 April – 25 August24 May – 6 October14 June – 6 October
Oregano3 January – 22 August4 March – 21 October25 March – 21 October
Pansyfrom 7 Januaryfrom 4 Marchfrom 25 March
Parsley——sow 25 March – 10 September
Parsnip——sow 25 March – 30 July
Peanut17 April – 21 July24 May – 27 August14 June – 27 August
Peas——sow 25 March – 12 September
Petuniafrom 22 Marchfrom 24 Mayfrom 14 June
Physalis24 March – 18 July8 May – 1 September29 May – 1 September
Pumpkin12 April – 19 June24 May – 31 July14 June – 31 July
Purple coneflowerfrom 1 January—from 25 March
Radish——sow 25 March – 26 October
Sage14 January – 18 August4 March – 6 October25 March – 6 October
Scarlet sagefrom 17 March—from 29 May
Snapdragonfrom 29 Decemberfrom 4 Marchfrom 25 March
Soybean——sow 14 June – 6 September
Spinach——sow 25 March – 1 October
Stevia20 March – 9 July8 May – 27 August29 May – 27 August
Stock——sow from 25 March
Sunflower——sow from 1 June
Sweet alyssum——sow from 25 March
Sweet Corn31 March – 1 September22 April – 23 September13 May – 23 September
Sweet peafrom 21 Januaryfrom 4 Marchfrom 25 March
Sweet William——sow from 25 March
Swiss Chard——sow 25 March – 26 September
Thyme——sow 25 March – 7 August
Tomato17 March – 14 June8 May – 5 August29 May – 5 August
Turnip——sow 25 March – 28 September
Watercress——sow 25 March – 9 October
Watermelon26 April – 19 July24 May – 16 August14 June – 16 August
Zinniafrom 27 Aprilfrom 1 Junefrom 22 June
Zucchini3 May – 18 August24 May – 8 September14 June – 8 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 Potenza

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

SoilDateAgainst the last spring frost
5 °C21 January84 days earlier
10 °C24 April9 days later
15 °C29 May44 days later
18 °C14 June60 days later

Frost dates near Potenza

Of the nearest cities on our list, the last spring frost ends earliest in Taranto (13 February) and latest in Salerno (8 March).

CityDistanceLast spring frostFirst autumn frost
Salerno86 km8 March11 December
Foggia94 km15 February20 December
Bari104 km14 February—
Taranto123 km13 February—
Naples132 km——

Seeds, seedlings and markets in Potenza

Within 15 km of Potenza OpenStreetMap lists 2 garden centres, 1 market and 1 farm shop (collected 27 October 2026). The nearest garden centre to the city centre is Olimpo Verde, 6 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Potenza

Frosts in Potenza usually come from about 25 November to about 15 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 Potenza by month

Average weather in Potenza over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (21.6–27.4 °C). Nights average below 0 °C in January (-1.4 °C) and February (-0.3 °C). About 789 mm of rain falls in a year, on 120 days; November is the wettest month (103 mm) and July the driest (29 mm).

MonthDay, °CNight, °CRain, mmRainy days
January5.8-1.49512
February8.2-0.36710
March9.90.58713
April13.73.46111
May17.57.38313
June24.212.3478
July27.414.9295
August26.814.9377
September21.611.3548
October177.7609
November11.64.110314
December7.80.66610

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 26 October
Crocus26 October – end of December
Daffodil26 October – end of December
Garlic26 October – end of December
Grape hyacinthby 26 October
Helleboreby 26 October
Hyacinth26 October – end of December
Lilyby 26 October
Ornamental onionby 26 October
Peonyby 26 October
Saffronby 26 October
Snowdropby 26 October
Tulip26 October – end of December
Wild garlicby 26 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).