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Last and first frost dates in La Rochelle

France

In La Rochelle the last spring frost usually comes around 14 February and the first autumn frost around 12 December, which leaves about 301 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 28 April to 22 August.

Last spring frostaround 14 February
First autumn frostaround 12 December
Frost-free days301 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 La Rochelle?

The last frost in La Rochelle usually comes around 14 February: 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 24 January, while corn waits until 3 April. The first autumn frost follows around 12 December, about 301 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha22 December – 3 September31 January – 13 October21 February – 13 October
Ageratumfrom 10 February—from 28 April
Arugula——sow 24 January – 7 November
Basil30 March – 10 October7 May – 17 November28 May – 17 November
Beet——sow 24 January – 13 October
Bell Pepper8 March – 23 June7 May – 22 August28 May – 22 August
Black-eyed Susanfrom 30 November—from 21 February
Bok Choy27 December – 21 October31 January – 25 November21 February – 25 November
Borage——sow 21 February – 18 October
Broad bean——sow 24 January – 3 September
Broccoli——sow 24 January – 27 August
Brussels Sprouts19 November – 25 July3 January – 8 September24 January – 8 September
Busy Lizziefrom 29 November—from 21 February
Cabbage——sow 24 January – 4 August
Calendula——sow from 24 January
Carrot——sow 24 January – 19 September
Cauliflower22 November – 27 August3 January – 8 October24 January – 8 October
Celeriac15 November – 24 June31 January – 9 September21 February – 9 September
Celery15 November – 4 July31 January – 19 September21 February – 19 September
Celosiafrom 26 Februaryfrom 12 Aprilfrom 3 May
Chamomile——sow 24 January – 8 October
Chayote15 December – 17 June13 March – 13 September3 April – 13 September
Chickpea——sow 24 January – 24 August
Chicory9 December – 18 September—24 January – 13 October
Chili Pepper8 March – 30 July7 May – 28 September28 May – 28 September
China asterfrom 16 Marchfrom 7 Mayfrom 28 May
Chives——sow 24 January – 29 September
Cilantro——sow 24 January – 9 October
Corn——sow 3 April – 24 August
Corn poppy——sow from 24 January
Cosmosfrom 26 Februaryfrom 12 Aprilfrom 3 May
Cucumber9 April – 30 August7 May – 27 September28 May – 27 September
Daikon——sow 24 January – 6 October
Delphiniumfrom 5 November—from 24 January
Dill——sow 24 January – 19 October
Edging lobeliafrom 29 November—from 21 February
Eggplant8 March – 23 June7 May – 22 August28 May – 22 August
Florence fennel17 December – 3 September31 January – 18 October21 February – 18 October
Foxglovefrom 18 October—from 24 January
Garden sorrel——sow 24 January – 7 October
Green Beans——sow 3 May – 1 September
Hollyhock——sow from 24 January
Hyssop——sow 24 January – 30 August
Kale——sow 24 January – 1 October
Kiwano6 March – 6 September7 April – 8 October28 April – 8 October
Kohlrabi——sow 24 January – 11 October
Leek25 October – 15 June3 January – 24 August24 January – 24 August
Lemon balm——sow 24 January – 3 October
Lettuce——sow 24 January – 16 October
Lisianthusfrom 8 Octoberfrom 3 Januaryfrom 24 January
Lovage——sow from 24 January
Luffa26 March – 1 July7 May – 12 August28 May – 12 August
Marigoldfrom 20 Decemberfrom 31 Januaryfrom 21 February
Marjoram8 March – 18 September—28 May – 17 November
Melon9 April – 17 August7 May – 14 September28 May – 14 September
Microgreens——sow 3 May – 28 November
Moringa19 March – 23 September13 May – 17 November3 June – 17 November
Moss rosefrom 6 December—from 21 February
Mustard greens——sow 24 January – 28 October
Napa cabbage29 December – 28 September31 January – 31 October21 February – 31 October
Nasturtiumfrom 24 Decemberfrom 31 Januaryfrom 21 February
Okra26 March – 11 September7 May – 23 October28 May – 23 October
Oregano4 November – 8 September3 January – 7 November24 January – 7 November
Pansyfrom 8 Novemberfrom 3 Januaryfrom 24 January
Parsley——sow 24 January – 27 September
Parsnip——sow 24 January – 16 August
Peanut31 March – 7 August7 May – 13 September28 May – 13 September
Peas——sow 24 January – 29 September
Petuniafrom 5 Marchfrom 7 Mayfrom 28 May
Physalis21 February – 4 August7 April – 18 September28 April – 18 September
Pumpkin26 March – 6 July7 May – 17 August28 May – 17 August
Purple coneflowerfrom 2 November—from 24 January
Radish——sow 24 January – 12 November
Sage15 November – 4 September3 January – 23 October24 January – 23 October
Scarlet sagefrom 14 February—from 28 April
Snapdragonfrom 30 Octoberfrom 3 Januaryfrom 24 January
Soybean——sow 28 May – 23 September
Spinach——sow 24 January – 18 October
Stevia17 February – 26 July7 April – 13 September28 April – 13 September
Stock——sow from 24 January
Sunflower——sow from 3 May
Sweet alyssum——sow from 24 January
Sweet Corn21 February – 18 September15 March – 10 October5 April – 10 October
Sweet peafrom 22 Novemberfrom 3 Januaryfrom 24 January
Sweet William——sow from 24 January
Swiss Chard——sow 24 January – 13 October
Thyme——sow 24 January – 24 August
Tomato14 February – 1 July7 April – 22 August28 April – 22 August
Turnip——sow 24 January – 15 October
Watercress——sow 24 January – 26 October
Watermelon9 April – 5 August7 May – 2 September28 May – 2 September
Zinniafrom 8 Aprilfrom 13 Mayfrom 3 June
Zucchini16 April – 4 September7 May – 25 September28 May – 25 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 La Rochelle

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 1 day before the last spring frost and 15 °C 73 days after it.

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °C13 February1 day earlier
15 °C28 April73 days later
18 °C28 May103 days later

Frost dates near La Rochelle

Of the nearest cities on our list, the last spring frost ends earliest in Bordeaux (15 February) and latest in Limoges (1 April).

CityDistanceLast spring frostFirst autumn frost
Nantes122 km7 March29 November
Poitiers123 km19 March19 November
Angers153 km12 March27 November
Bordeaux153 km15 February30 November
Limoges190 km1 April27 November

Seeds, seedlings and markets in La Rochelle

Within 15 km of La Rochelle OpenStreetMap lists 10 garden centres, 5 markets and 6 farm shops (collected 27 October 2026). The nearest garden centre to the city centre is Boucard Horticulture, 3 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in La Rochelle

Frosts in La Rochelle usually come from about 12 December to about 14 February. 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 La Rochelle by month

Average weather in La Rochelle over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (22.4–24.9 °C). No month averages below 0 °C at night; the coldest nights, in January, average 4.5 °C. About 913 mm of rain falls in a year, on 137 days; November is the wettest month (109 mm) and July the driest (33 mm).

MonthDay, °CNight, °CRain, mmRainy days
January9.64.510014
February11.35.37411
March13.26.77913
April168.55810
May19.211.97012
June22.715.76811
July24.517.1337
August24.916.9438
September22.414.56410
October18.611.810713
November13.67.710914
December10.95.710814

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 12 November
Crocusby 12 November
Daffodilby 12 November
Garlic12 November – end of December
Grape hyacinthby 12 November
Helleboreby 12 November
Hyacinthby 12 November
Lilyby 12 November
Ornamental onionby 12 November
Peonyby 12 November
Saffronby 12 November
Snowdropby 12 November
Tulipby 12 November
Wild garlicby 12 November

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).