Thunberg spiraea (Spiraea thunbergii)
Thunberg spiraea (Spiraea thunbergii) is a shrub that can grow 50cm – 1.5m tall and 50cm – 1.5m wide. In this growing guide we’ll learn the cultivation details and how to plant Thunberg spiraea (Spiraea thunbergii).
This plant is commonly known as Thunberg spiraea.
This is a deciduous plant that takes 10-20 years to reach full maturity.
In this article
Plant profile
Common name: Thunberg spiraea
Scientific name: Spiraea thunbergii
Plant type: Shrubs
Habit: Bushy
Height: 50cm – 1.5m
Spread: 50cm – 1.5m
Foliage: Deciduous
Sunlight: Full Sun, Partial shade
Soil: Chalk, Loam, Sand
Moisture: Moist but well drained, Well drained
Garden type: Informal Garden
Planting type: Flower borders and bedding, Low Maintenance
Other characteristics: RHS Award of Garden Merit
Seasonal colors
| Season | Stem | Foliage | Flower | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
How to plant Thunberg spiraea (Spiraea thunbergii) – peganum from Small Dole, England, CC BY-SA 2.0, via Wikimedia Commons
Shrubs are fundamental elements in any garden.
They add color and interest throughout the seasons with their wide variety of flowers, foliage, fruits, trunks and stems.
Whatever the size or style of your garden, the permanent woody structure or the foliage of evergreen shrubs will give the space shape and dimension.
Other types of Spiraea to consider:
See all Spiraea
How to plant
In this section we will learn how to plant Thunberg spiraea (Spiraea thunbergii), know its needs in terms of soil, watering and sun exposure.
Soil
Thunberg spiraea (Spiraea thunbergii) is not a demanding plant regarding the type of soil and can grow in chalk, loam or sand.
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The chalky soil is pale and contains chunks of calcium-rich rock. It is a fertile and well-draining soil, almost always alkaline.
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The loam soil is dark, rich in organic matter but balanced in minerals. It offers the best of all worlds, retaining enough water for the plants, but allowing excess moisture to drain away. This is the most desired type of garden soil, perfect for most plants.
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Sandy soil is light, porous and very easy to drain. It is a soil poor in organic matter and nutrients. It is composed of relatively large mineral particles that allow water to drain quickly.
It is not very sensitive to soil acidity or alkalinity and grows well in soils with pH acid, alkaline or neutral.
Regarding drainage, Spiraea thunbergii likes to grow in moist but well drained or well drained soils.
Sunlight
Thunberg spiraea (Spiraea thunbergii) is a plant that should be grown in full sun or partial shade positions.
Cultivation profiles – Growing Thunberg spiraea (Spiraea thunbergii) – Аимаина хикари, CC0, via Wikimedia Commons
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