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When to plant crocuses in Nantes: by 30 October

In Nantes, crocus: plant by 30 October. The winter here is too mild for our late-planting rule, so we give no later limit. For planting stock, the places nearby include Truffaut (garden centre, 5 km) and La jardinerie orvaltaise (garden centre, 6 km); addresses and opening hours are below.

Crocus in Nantes: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 3.4 °C.

Plantingby 30 October
First autumn frost29 November
Coldest nightsJanuary, 3.4 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:08 on 30 October
Daylight at the winter solstice8:29

The same dates in Nantes hold for Garlic, Tulip, Daffodil and Hyacinth.

Crocus in Nantes: depth, winter cold, pests and pets

Plant Dutch crocuses (Crocus vernus) about 12 cm deep and 9 cm apart; smaller species go 7–10 cm deep (RHS).

In Nantes the average daily temperature stays at 10 °C or lower for about 19 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 15–17 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Crocuses multiply on their own (they naturalise); in a lawn, hold off mowing until their leaves die back (RHS).

Birds, squirrels and rodents damage crocuses; planting under metal mesh may reduce losses (RHS). Spring crocus gives dogs and cats vomiting and diarrhoea; do not confuse it with autumn crocus (Colchicum), which is very toxic (Pet Poison Helpline).

Sources: RHS, Wisconsin Horticulture Extension, Pet Poison Helpline.

Crocus in nearby cities

Around Nantes, Poitiers is 10 days earlier and La Rochelle 13 days later.

CityDistanceDateDifference
Angers80 kmby 28 October2 days earlier
Rennes99 kmby 29 October1 day earlier
La Rochelle122 kmby 12 November13 days later
Le Mans157 km25 October – end of December5 days earlier
Poitiers160 km20 October – end of December10 days earlier
Quimper210 kmby 9 November10 days later

Where to buy crocus for planting in Nantes

Planting stock goes into the ground by 30 October; buy it before that. Within 15 km of Nantes OpenStreetMap lists 18 garden centres, 1 plant nursery, 51 markets and 22 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Nantes?

In Nantes, crocus: plant by 30 October. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Nantes?

Last spring frost around 7 March, first autumn frost around 29 November.

Other crops in Nantes, with their dates