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PlantSnap
Plant Care
Thunberg's meadowsweet
(Spiraea thunbergii)
Also Known As
Thunberg's meadowsweet, Thunberg's spirea, Japanese spirea, Thunberg spiraea, Spring spirea
About This Plant
Spiraea thunbergii is a deciduous shrub that grows up to 5 feet tall and 6 feet wide. It has a fountain-like growth habit with arching branches that are covered in small white flowers in early spring. The leaves are light green, turning yellow in the fall.
Plant Care Instructions
Outdoor Size Range
4-6 feet (1.2-1.8 m)
Light Requirements
Thunberg spirea prefers full sun to partial shade. It can tolerate some shade but may produce fewer flowers.
Humidity Needs
Thunberg spirea prefers average to moist conditions but can tolerate some drought.
Fertilizing Schedule
Fertilize in early spring with a balanced fertilizer.
Pruning Guidelines
Prune in late winter or early spring before new growth appears. Remove old, dead, or diseased wood and shape the plant as desired.
Common Pests and Diseases
Thunberg spirea is relatively pest and disease-resistant, but can be susceptible to aphids, spider mites, and leaf spot.
Indoor Size Range
36-48 inches (91-122 cm)
Watering Schedule
Water regularly during the first growing season to establish a deep, extensive root system. Once established, reduce frequency; tolerates mild drought.
Temperature Range
This plant is hardy in USDA zones 4-8 and can tolerate a wide range of temperatures.
Growing Season
The growing season for Thunberg spirea is spring through fall.
Growing Difficulty Level
Thunberg spirea is relatively easy to grow and maintain.
USDA Hardiness Zones
USDA hardiness zones 4-8
Did You Know?
The Thunberg spirea is named after the Swedish botanist Carl Peter Thunberg, who first described the plant in the late 18th century.
