Water
Water regularly to keep the soil consistently moist, especially during dry periods. Avoid waterlogging, as this can lead to root rot.
Allow the top inch of soil to dry out slightly between waterings for optimal growth and health.
Also known as Pearl Spiraea · Thunberg Spiraea · Thunberg's Spiraea
Thunberg's Meadowsweet (Spiraea thunbergii) is an ornamental shrub known for its graceful arching branches and masses of small, white flowers in early spring.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers at least 6 hours of direct sunlight daily for best flowering and compact growth.
Consistent Moisture
50% intensity
Keep soil evenly moist, but not waterlogged.
Well-drained loam
50% intensity
Hardy
25% intensity
Tolerates a wide range of temperatures once established, generally hardy in USDA zones 4-8.
Light Feeding
25% intensity
Fertilize once in early spring with a balanced, slow-release formula.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly to keep the soil consistently moist, especially during dry periods. Avoid waterlogging, as this can lead to root rot.
Allow the top inch of soil to dry out slightly between waterings for optimal growth and health.
Prune immediately after flowering to shape the plant and encourage denser growth. Remove any dead, damaged, or crossing branches.
Light pruning can also be done to maintain desired size and form without sacrificing blooms.
Propagate by semi-hardwood cuttings taken in mid-summer. Insert cuttings into a moist, well-draining potting mix. Keep them in a humid environment, such as a propagator, until they root.
This method is highly effective for increasing plant numbers.
Repot young plants every 1-2 years in spring, or when they become root-bound. Choose a pot slightly larger than the current one with drainage holes. Use a good quality, well-draining potting mix for best results.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Thunberg's Meadowsweet (Spiraea thunbergii)
Where Thunberg's Meadowsweet (Spiraea thunbergii) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Spiraea |
| Species | Spiraea thunbergii |
Similar in genus Spiraea
Answers based on plant encyclopedia data
