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When to plant crocuses in Stockholm: 28 September – 5 December

In Stockholm, crocus: plant from 28 September to about 5 December. For planting stock, the places nearby include Ängsgläntans gårdsbutik (farm shop, 4 km) and Nacka Handelsträdgård (garden centre, 8 km); addresses and opening hours are below.

Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. 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: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Crocus in Stockholm: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -3.7 °C.

Planting28 September – 5 December
First autumn frost28 October
Coldest nightsJanuary, -3.7 °C
Soil back at 1 °C in spring5 February
Daylight11:48 on 28 September
Daylight at the winter solstice6:05

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

Crocus in Stockholm: 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 Stockholm the average daily temperature stays at 10 °C or lower for about 31 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 Stockholm, Oslo is 9 days earlier and Copenhagen 22 days later.

CityDistanceDateDifference
Tallinn378 km2 October – 26 November4 days later
Helsinki396 km20 September – 25 November8 days earlier
Oslo416 km19 September – 9 November9 days earlier
Riga442 km14 October – 8 December16 days later
Copenhagen522 km20 October – end of December22 days later
Kaliningrad534 km15 October – 30 December17 days later

Where to buy crocus for planting in Stockholm

Planting stock goes into the ground from 28 September to about 5 December; buy it before that. Within 15 km of Stockholm OpenStreetMap lists 21 garden centres, 1 farm-supply shop, 6 markets and 3 farm shops (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Stockholm?

In Stockholm, crocus: plant from 28 September to about 5 December. Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

When is the last spring frost in Stockholm?

Last spring frost around 5 May, first autumn frost around 28 October.

Other crops in Stockholm, with their dates