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

In Stockholm, hyacinth: plant from 28 September to about 5 December. For planting stock, the places nearby include Slottsträdgården Ulriksdal (garden centre, 8 km) and Plantagen (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).

Hyacinth 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 Crocus.

Hyacinth in Stockholm: depth, winter cold, pests and pets

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS). In the ground hyacinths are fully hardy, but in containers they can be frost tender in cold winters (RHS); here winter nights average below 0 °C, so wrap the pots or move them to a sheltered spot.

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 12–15 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Flowers get smaller in the years after planting: for full spikes, replace the bulbs or add a few new ones each autumn (RHS).

If squirrels are a problem, protect the bulbs with wire mesh (RHS). Hyacinths are toxic to dogs, cats and horses: intense vomiting and diarrhoea (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Hyacinth 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 hyacinth 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 hyacinths in Stockholm?

In Stockholm, hyacinth: 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