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Thunberg's Meadowsweet
Spiraea thunbergii
Easy · Beginner friendlyAbout Thunberg's Meadowsweet
Thunberg Spirea or Baby's Breath Spirea is a graceful deciduous shrub from China and Japan, growing 3-5 feet tall with a fountain-like arching habit and extremely fine-textured foliage. In very early spring, before the willowy leaves emerge, tiny white flowers smother the arching branches in a cloud-like display. The narrow linear leaves give it the finest texture of any spirea, turning yellow-orange in autumn. A classic of Japanese gardens, it brings an airy elegance unmatched by showier shrubs.
- Cold-hardy
How to care for Thunberg's Meadowsweet
Watering
- Springevery 7 days
- Summerevery 5 days
- Fallevery 10 days
- Winterevery 21 days
Soil · Rich & loamy
- Top dressingBark mulch15%
- Main mixRich loam + compost 3:170%
- DrainageGravel15%
Use fully finished compost — fresh compost burns roots.
FERTILIZER
Balanced Feed 14-14-14
An even feed covers all three needs at once, keeping leaves, roots and blooms moving together with nothing pushed out of balance.
- Nitrogen · Leaves
- Phosphorus · Roots + Blooms
- Potassium · Strength
- Springevery 30 days
At a Glance
- NativeEast Asia
- Height3–5 ft (0.9–1.5 m)
- Spread4–6 ft (1.2–1.8 m)
- Flower colorWhite
- Foliage colorGreen, Yellow, Bronze, Red
- SoilLoamy, Well-drained
- LocationsYard
Bloom time
BLOOM CYCLE
Peak bloom
Mar–Apr
Clouds of tiny white flowers on arching branches March to April
Fragrance
LIGHT FRAGRANCE
The flowers have a mild sweet scent.
Toxicity
No toxicity has been reported for this plant. Still, it is wise to keep pets from chewing on any houseplant.
Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
DISTRIBUTION
- Native
- Introduced
- East Asia
History
Spiraea thunbergii is native to China and long cultivated in Japan, where it is known as yukiyanagi, or snow willow, for the way its white spring flowers cover arching branches like fresh snow. Blume formalized the name in 1826 from Siebold's material, honoring Carl Peter Thunberg, who collected in Japan in the 1770s. The shrub is one of the earliest spireas to bloom, flowering in late March and April before or just as the narrow leaves emerge.
In full bloom it becomes a fountain of tiny white stars, a first clear signal of spring in temperate gardens. Robert Fortune introduced it to Western cultivation around 1863. The foliage turns yellow, orange, and red in autumn, and the cultivar 'Ogon', also sold as 'Mellow Yellow', added bright chartreuse spring leaves to the familiar white-flower display.
Symbolism & meaning
What It Symbolizes
Thunberg's Meadowsweet embodies grace, its arching branches creating a fountain of small white flowers that cascade earthward each early spring. The brief, abundant bloom evokes the Japanese aesthetic of mono no aware — beauty made all the more poignant by its impermanence. This is a shrub for those who treasure transience: a fountain of bloom that lasts only days, then settles back into modest green for the rest of the year.
- Grace — arching branches create a fountain of white flowers
- Transience — brief spring display evokes the Japanese aesthetic of beauty in impermanence
Where the Name Comes From
The name Thunberg's Meadowsweet describes its sweet scent or flavor. 'Thunbergii' honors Carl Peter Thunberg (1743–1828), Swedish botanist and 'father of Japanese botany'.
Uses & Fun Facts
- Thunberg's Meadowsweet sheared into clipped hedges and privacy screens
- Arching white sprays make soft spring texture for shrub borders
Related plants
More Spiraea plants
Birch-Leaved SpireaSpiraea betulifolia
Reeve's SpireaSpiraea cantoniensis
Japanese SpireaSpiraea japonica
Snowmound SpireaSpiraea nipponica
Plants with similar care
Chinese AbeliaAbelia chinensis
Fragrant AbeliaAbelia mosanensis
Large-Flowered AbeliaAbelia uniflora
Glossy AbeliaAbelia x grandiflora
Frequently asked questions
How often should I water Thunberg's Meadowsweet?
In summer, water about every 5 days; in winter, about every 21 days. Adjust for heat, pot size and drainage.
How much light does Thunberg's Meadowsweet need?
Full sun: 6+ hrs direct. Watch the leaves — scorching or stretching means the light needs adjusting.
Is Thunberg's Meadowsweet toxic to cats or dogs?
No toxicity has been reported for this plant. Still, it is wise to keep pets from chewing on any houseplant. Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
Is Thunberg's Meadowsweet easy to grow?
Yes — it is considered an easy, beginner-friendly plant.
When does Thunberg's Meadowsweet bloom?
It typically blooms Mar–Apr in the Northern Hemisphere.
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