When should you plant spring bulbs in Stockholm?
By Service Plus Stockholm ABUpdated 5 min read
Short answer
When should you plant spring bulbs in Stockholm?
Spring bulbs such as tulips, daffodils and crocuses should be planted from September to mid-November in Stockholm, as long as the soil has not frozen. The best results come when the soil temperature has dropped below 10 degrees, usually in October. The bulbs then have time to root before winter but won't sprout prematurely if the autumn is mild. If you wait too long and the ground freezes, the bulbs become difficult to plant and risk being damaged.
When is the right time to plant spring bulbs in Stockholm?
The window for planting spring bulbs in the Stockholm area runs from September to mid-November. The most important thing is that the soil can still be dug and has not started to freeze, which normally happens sometime in November depending on the winter. Bulbs planted too early, in warm August soil, risk sprouting above ground already in autumn and being damaged by frost. If planted instead once the soil has cooled but not frozen, the root system has time to establish itself without the green shoot having time to emerge.
- September to October suits most species in a normal year
- Mid-November is a reasonable final deadline before the ground freezes
- Preferably wait until nights with frost risk have become common
- A mild, long autumn means you can plant a little later
What soil temperature suits spring bulbs best?
Bulbs root best when the soil temperature is below about 10 degrees but before it drops towards 0. In the Stockholm area this usually happens during October, sometimes as early as late September in a cold autumn. A simple way to check is to stick a finger or a soil thermometer a few centimetres into the bed; if the soil still feels warm and dry after a sunny day, it's often too early.
- Measure or feel the soil temperature before planting
- Wait with extra-early varieties like crocus until September
- Plant tulips and daffodils preferably in October
- Don't wait too long if the forecast shows early frost
How deep and close together should the bulbs be planted?
As a rule of thumb, a bulb is planted at a depth equal to two to three times the bulb's own height, measured from the base of the bulb. Larger bulbs such as daffodils and tulips are planted deeper, around 15–20 centimetres, while smaller bulbs such as crocus and scilla only need 5–8 centimetres. The distance between bulbs should be roughly the bulb's own width for a dense, natural sea of flowers in spring.
- Large bulbs, 15–20 cm deep, for example tulip and daffodil
- Smaller bulbs, 5–8 cm deep, for example crocus and glory-of-the-snow
- Plant with the tip facing up and the base facing down
- Cover with soil and water in lightly right after planting
Which spring bulbs suit Stockholm's climate?
Most spring bulbs sold in shops cope well with Stockholm's winters since they are hardy down to zone 3-4, which covers the whole county. Tulips, daffodils, crocuses, scilla and grape hyacinth are reliable choices that return year after year if left undisturbed. For early-season blooms, already in March, choose snowdrops and crocuses, while tulips and daffodils flower in April and May.
- Crocus and snowdrop flower first, often already in March
- Scilla and grape hyacinth give a blue touch in April
- Daffodil and tulip round off the season in April-May
- Choose bulbs labelled for the Swedish climate or zone 3-4
How we protect the bulbs from frost and rodents
Voles and mice take tulips and crocuses above all, while daffodils and crown imperial are left alone. Where the pressure is high we plant in mesh baskets or lay a fine net over the area under the mulch, and we avoid leaving bulb remains and skins on the ground, which draw rodents in.
Against frost a layer of leaves or bark mulch is normally enough, laid on once the ground has started to cool rather than before. We plant the bulbs at the right depth for the species, which is the simplest and most underrated frost protection there is, and bring both bulbs and mulch if you want.
How Service Plus helps with planting spring bulbs
Service Plus Stockholm AB plants spring bulbs for homeowners and in shared beds for housing cooperatives (BRF) and property companies ahead of spring. Flora, our planting specialist, assesses the soil, location and desired look on site and suggests bulbs that suit both the climate and the level of upkeep. Keep in mind that the RUT deduction applies to the labour cost of the planting, not the bulbs themselves, and that Service Plus always provides a free quote with the price before work begins.
Common follow-up questions
Can you plant spring bulbs in December in Stockholm?
It's possible if the soil is still workable and hasn't frozen, but the risk of ground frost increases quickly after mid-November, so the earlier the safer.
Does the RUT deduction apply to planting spring bulbs?
Yes, the labour cost of the planting can qualify for the RUT deduction of up to 50 percent, but the bulbs themselves as materials are not covered.
Do spring bulbs need fertilising when planted?
A thin layer of bone meal or bulb fertiliser in the planting hole helps root formation, but it's not a requirement for the bulbs to flower the first spring.
Do you have to dig up spring bulbs every year?
No, most spring bulbs such as tulips, daffodils and crocuses can stay in the ground for several years and will come back on their own.
