The Botanical Diary
G
Shrubs

Grey Spiraea

Spiraea × cinerea

The flower clusters cover the branches so densely that the foliage is completely hidden during flowering.

Regions
all regions
Colour
White
Grey Spiraea
🌸
Bloom
April–May
☀️
Light
Full sun / напівтінь
💧
Watering
Moderate
📏
Height
1–1,5 m
❄️
Hardiness
Zone 4а

Grey Spiraea is a charming spring-flowering shrub that brings gardeners their first whispers of warmth. This hybrid originated from the crossing of several spiraea species and became a favourite in European gardens as early as the nineteenth century. The plant spread through gardens thanks to its undemanding nature and brilliant flowering, which adorns the garden when most spring plants are still dormant.

The branches of grey spiraea in April and May literally burst with dense clusters of delicate white flowers. The inflorescences cover the stems so densely that the foliage is completely hidden beneath this fairytale snow of blooms — which is precisely how the plant earned its name. Several ornamental forms exist, differing in flowering intensity and leaf tints, yet all retain that same enchanting spring character.

This spiraea is simply perfect for compositions with forsythia, weigela, and mock orange. They combine beautifully in their flowering times and create a true spring festival of colour. The shrub is so versatile that it will fit equally well in a small urban garden or spacious park, in formal designs or natural landscapes.

If you seek a plant that demands little effort yet brings maximum joy during the finest season of the year — grey spiraea is exactly what you need. Plant it near the entrance path so that every spring morning greets you with this white, spectacular fountain of blooms.

Location & soil

Grey Spiraea — planting & location

LightFull sun / напівтінь
Soil typeany, рН 6–7,5
Planting timeApril або October
Plant spacing0,8–1,2 m
Planting depthAt root collar level

Spring-flowering with delicate, fine blooms appearing before the foliage

Water needs

How to water Grey Spiraea

IntensityModerate
FrequencyEvery 14 days (в)
Volume10–12
MethodAt the base

Drought-tolerant once established

Annual care

Fertilizing and pruning: Grey Spiraea

Spring fertilizingMineral complex fertiliser (April)
Summer fertilizingNo feeding required
Autumn fertilizingNo feeding required
Pruning timeAfter flowering
Pruning typeSanitary

Remove spent branches and one-third of old stems

Cold hardiness

Grey Spiraea — winter hardiness & care

Hardiness zoneZone 4а
Winter coverNot required
Cover timing
Plant protection

Diseases and pests of Grey Spiraea

Garden design

What grows well with Grey Spiraea?

Forsythia, вейгела, чубушник