When to plant garlic in Grenoble: 25 September – 1 December

In Grenoble, garlic: plant from 25 September to about 1 December. For planting stock, the places nearby include Ferme Pimprenelle (farm shop, 6 km) and La Cueillette de Noyarey (farm shop, 9 km); addresses and opening hours are below.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

The date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: UVM Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Garlic in Grenoble: soil, season and weather

Garlic goes into the ground in Grenoble from 25 September to about 1 December; the window opens a month before the first autumn frost. Nights then average below 0 °C in November–March; the coldest, January, averages -5.1 °C.

Planting	25 September – 1 December
First autumn frost	25 October
Coldest nights	January, -5.1 °C
Soil back at 5 °C in spring	27 March
Harvest (card)	about 8 months after planting: June
Daylight	12:04 on 25 September
Daylight at the winter solstice	8:45

The same dates in Grenoble hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Grenoble: care after planting

Planted on 25 September: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

25 September — feed: nitrogen
23 October — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

All the nearest cities on our list plant garlic later than Grenoble; the closest date is in Annecy, 20 days later.

City	Distance	Date	Difference
Chambéry	45 km	21 October – end of December	26 days later
Valence	70 km	22 October – end of December	27 days later
Annecy	86 km	15 October – end of December	20 days later
Lyon	93 km	26 October – end of December	31 days later
Saint-Étienne	108 km	18 October – end of December	23 days later
Geneva	117 km	18 October – end of December	23 days later

Where to buy garlic for planting in Grenoble

Planting stock goes into the ground from 25 September to about 1 December; buy it before that. Within 15 km of Grenoble OpenStreetMap lists 17 garden centres, 4 plant nurseries, 55 markets and 19 farm shops (collected 20 October 2026).

Le Comptoir De Nos Fermes — farm shop
Chemin des Evequaux 100, 38330 Biviers · Thu–Fri 09:00–19:00, Sat 09:00–18:00 · 9 km
Ferme Pimprenelle — farm shop
Tue 17:00–19:00; Fri 17:00–19:00 · 6 km · fermepimprenelle.com
La Cueillette de Noyarey — farm shop
Tue–Sat 09:00–12:30, 16:00–18:30; Sun 09:00–12:00 · 9 km · lacueillettedenoyarey.com
Ferme Les Colibris — farm shop
Mon–Thu 09:00–12:00; Fri 15:00–19:00 · 15 km · ferme-des-colibris.fr

Questions