Greenly Garden

Last and first frost dates in Genoa

Italy

In Genoa the last spring frost usually comes around 23 March and the first autumn frost around 26 November, which leaves about 248 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 30 May to 6 August.

Last spring frostaround 23 March
First autumn frostaround 26 November
Frost-free days248 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 Genoa?

The last frost in Genoa usually comes around 23 March: 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 2 March, while corn waits until 4 May. The first autumn frost follows around 26 November, about 248 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha11 February – 18 August23 March – 27 September13 April – 27 September
Ageratumfrom 14 March—from 30 May
Arugula——sow 2 March – 22 October
Basil22 April – 24 September30 May – 1 November20 June – 1 November
Beet——sow 2 March – 27 September
Bell Pepper31 March – 7 June30 May – 6 August20 June – 6 August
Black-eyed Susanfrom 20 January—from 13 April
Bok Choy16 February – 5 October23 March – 9 November13 April – 9 November
Borage——sow 30 March – 2 October
Broad bean——sow 2 March – 18 August
Broccoli——sow 2 March – 11 August
Brussels Sprouts26 December – 9 July9 February – 23 August2 March – 23 August
Busy Lizziefrom 5 January—from 30 March
Cabbage——sow 2 March – 19 July
Calendula——sow from 2 March
Carrot——sow 2 March – 3 September
Cauliflower29 December – 11 August9 February – 22 September2 March – 22 September
Celeriac5 January – 8 June23 March – 24 August13 April – 24 August
Celery5 January – 18 June23 March – 3 September13 April – 3 September
Celosiafrom 2 Aprilfrom 17 Mayfrom 7 June
Chamomile——sow 2 March – 22 September
Chayote15 January – 1 June13 April – 28 August4 May – 28 August
Chickpea——sow 2 March – 8 August
Chicory15 January – 2 September—2 March – 27 September
Chili Pepper31 March – 14 July30 May – 12 September20 June – 12 September
China asterfrom 8 Aprilfrom 30 Mayfrom 20 June
Chives——sow 2 March – 13 September
Cilantro——sow 2 March – 23 September
Corn——sow 4 May – 8 August
Corn poppy——sow from 2 March
Cosmosfrom 2 Aprilfrom 17 Mayfrom 7 June
Cucumber2 May – 14 August30 May – 11 September20 June – 11 September
Daikon——sow 2 March – 20 September
Delphiniumfrom 12 December—from 2 March
Dill——sow 2 March – 3 October
Edging lobeliafrom 19 January—from 13 April
Eggplant31 March – 7 June30 May – 6 August20 June – 6 August
Florence fennel6 February – 18 August23 March – 2 October13 April – 2 October
Foxglovefrom 24 November—from 2 March
Garden sorrel——sow 2 March – 21 September
Green Beans——sow 7 June – 16 August
Hollyhock——sow from 2 March
Hyssop——sow 2 March – 14 August
Kale——sow 2 March – 15 September
Kiwano7 April – 21 August9 May – 22 September30 May – 22 September
Kohlrabi——sow 2 March – 25 September
Leek1 December – 30 May9 February – 8 August2 March – 8 August
Lemon balm——sow 2 March – 17 September
Lettuce——sow 2 March – 30 September
Lisianthusfrom 14 Novemberfrom 9 Februaryfrom 2 March
Lovage——sow from 2 March
Luffa18 April – 15 June30 May – 27 July20 June – 27 July
Marigoldfrom 9 Februaryfrom 23 Marchfrom 13 April
Marjoram31 March – 2 September—20 June – 1 November
Melon2 May – 1 August30 May – 29 August20 June – 29 August
Microgreens——sow 7 June – 12 November
Moringa16 April – 7 September10 June – 1 November1 July – 1 November
Moss rosefrom 12 January—from 30 March
Mustard greens——sow 2 March – 12 October
Napa cabbage18 February – 12 September23 March – 15 October13 April – 15 October
Nasturtiumfrom 13 Februaryfrom 23 Marchfrom 13 April
Okra18 April – 26 August30 May – 7 October20 June – 7 October
Oregano11 December – 23 August9 February – 22 October2 March – 22 October
Pansyfrom 15 Decemberfrom 9 Februaryfrom 2 March
Parsley——sow 2 March – 11 September
Parsnip——sow 2 March – 31 July
Peanut23 April – 22 July30 May – 28 August20 June – 28 August
Peas——sow 2 March – 13 September
Petuniafrom 28 Marchfrom 30 Mayfrom 20 June
Physalis25 March – 19 July9 May – 2 September30 May – 2 September
Pumpkin18 April – 20 June30 May – 1 August20 June – 1 August
Purple coneflowerfrom 9 December—from 2 March
Radish——sow 2 March – 27 October
Sage22 December – 19 August9 February – 7 October2 March – 7 October
Scarlet sagefrom 18 March—from 30 May
Snapdragonfrom 6 Decemberfrom 9 Februaryfrom 2 March
Soybean——sow 20 June – 7 September
Spinach——sow 2 March – 2 October
Stevia21 March – 10 July9 May – 28 August30 May – 28 August
Stock——sow from 2 March
Sunflower——sow from 7 June
Sweet alyssum——sow from 2 March
Sweet Corn28 March – 2 September19 April – 24 September10 May – 24 September
Sweet peafrom 29 Decemberfrom 9 Februaryfrom 2 March
Sweet William——sow from 2 March
Swiss Chard——sow 2 March – 27 September
Thyme——sow 2 March – 8 August
Tomato18 March – 15 June9 May – 6 August30 May – 6 August
Turnip——sow 2 March – 29 September
Watercress——sow 2 March – 10 October
Watermelon2 May – 20 July30 May – 17 August20 June – 17 August
Zinniafrom 6 Mayfrom 10 Junefrom 1 July
Zucchini9 May – 19 August30 May – 9 September20 June – 9 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 Genoa

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 21 days after the last spring frost and 15 °C 68 days after it.

SoilDateAgainst the last spring frost
5 °C30 January52 days earlier
10 °C13 April21 days later
15 °C30 May68 days later
18 °C20 June89 days later

Frost dates near Genoa

Of the nearest cities on our list, the last spring frost ends earliest in Milan (28 February) and latest in Novara (20 March).

CityDistanceLast spring frostFirst autumn frost
Piacenza93 km20 March1 December
Novara118 km20 March22 November
Milan119 km28 February30 November
Parma119 km18 March29 November
Turin122 km16 March20 November

Seeds, seedlings and markets in Genoa

Within 15 km of Genoa OpenStreetMap lists 18 garden centres, 1 farm-supply shop, 2 plant nurseries, 16 markets and 8 farm shops (collected 20 October 2026). The nearest garden centre to the city centre is Evergreen Garden Center, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Genoa

Frosts in Genoa usually come from about 26 November to about 23 March. 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 Genoa by month

Average weather in Genoa over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (20.6–25.2 °C). Nights average below 0 °C in January (-0.3 °C). About 1399 mm of rain falls in a year, on 138 days; October is the wettest month (201 mm) and July the driest (47 mm).

MonthDay, °CNight, °CRain, mmRainy days
January6.4-0.312010
February8.11.112912
March10.52.412311
April13.75.110412
May16.58.812617
June21.613.67211
July24.315.7479
August25.215.95710
September20.612.19511
October15.98.720112
November103.917712
December7.30.914811

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 27 October
Crocus27 October – end of December
Daffodil27 October – end of December
Garlic27 October – end of December
Grape hyacinthby 27 October
Helleboreby 27 October
Hyacinth27 October – end of December
Lilyby 27 October
Ornamental onionby 27 October
Peonyby 27 October
Saffronby 27 October
Snowdropby 27 October
Tulip27 October – end of December
Wild garlicby 27 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).