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Japanese meadowsweet

How to identify Japanese meadowsweet (Spiraea japonica)

Japanese meadowsweet

Japanese meadowsweet is characterized by its dense, mound-shaped growth habit, reaching typically up to 6 feet (1.8 meters) in height and spread. The foliage is a lush green, transitioning to bronze with the changing seasons. In late spring to early summer, it boasts clusters of small, vibrant pink flowers that form a striking contrast with the leaves. Japanese meadowsweet has finely-toothed, ovate leaves that add to its ornamental appeal. Its hardiness and vigorous growth can make it a dominant presence in landscapes where it is planted.

Lifespan

Lifespan: Perennial

Plant Type

Plant Type: Shrub

Leaf Type

Leaf Type: Deciduous

Quickly Identify Japanese meadowsweet

1

Dense mound-shaped growth up to 6 feet (1.8 meters) in height and spread.

2

Oval leaves with sharp-toothed margins, transitioning from green to bronze.

3

Small deep pink flowers in terminal corymbs up to 8 inches (20 cm).

4

Distinctive elongated follicle fruits, ripening to brown, in small clusters.

5

Wiry brown stems with thin, hairy branches, around 1/8 inch (0.3 cm) in diameter.

Japanese meadowsweetJapanese meadowsweetJapanese meadowsweetJapanese meadowsweetJapanese meadowsweet

Detailed Traits of Japanese meadowsweet

Leaf Features

The leaves of japanese meadowsweet are lustrous dark green when mature, measuring 1 to 3 inches (2.5 to 7.6 cm) in length. These oval-shaped leaves have sharply-toothed, serrate to double serrate margins. Young leaves display vibrant shades of pink, red, purple, yellow, or chartreuse. Beneath, the leaves are somewhat glaucous with downy veins, providing a distinctive texture and appearance. The combination of these features makes the leaves easily recognizable.

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Flower Features

The flowers of japanese meadowsweet are small, measuring 0.25 to 0.33 inches (6 to 8 mm) in diameter, and are typically deep pink or rose-reddish. They bloom in June and July, emitting a mild fragrance. The inflorescences are terminal flat-topped corymbs, or occasionally found in the uppermost leaf axils. These corymbs can span up to 8 inches (20 cm) in diameter. Each flower cluster is comprised of numerous tiny flowers, which are borne together, creating a vivid and attractive display.

Japanese meadowsweet Flower image
Inflorescence Type

Compound corymb

Japanese meadowsweet Inflorescence Type image
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Stem Features

The stem of japanese meadowsweet is wiry and freely branching, presenting an erect growth habit. It features a round cross-section, with the color varying from brown to reddish-brown. Occasionally, the stems are adorned with fine hairs, adding to their texture. These stems are generally thin, typically measuring around 1/8 inch (0.3 cm) in diameter, and exhibit a slightly rough texture due to the presence of small hairs or ridges. This distinct combination of color, texture, and branching pattern is characteristic of japanese meadowsweet's stem.

Japanese meadowsweet Stem image
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Fruit Features

The fruit of japanese meadowsweet is a distinctive, dry capsule known as a follicle that ripens to a brown hue. It typically has a firm texture and splits open upon maturity to release seeds. The follicle's shape is elongated, resembling a slender pod, and it measures approximately 1/8 inch (around 3 mm) long. Notably, these fruits are displayed in small clusters that can provide visual interest even after the flowering season. Despite their modest size, the fruits are an integral part of the plant's reproductive cycle.

Japanese meadowsweet Fruit image
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Japanese meadowsweet and Their Similar Plants

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White meadowsweet vs. Japanese meadowsweet: What's The Difference?
White meadowsweet (Spiraea alba) is a perennial shrub that grows from 91 to 183 cm tall. Pyramidal clusters of fragrant white or pink flowers blossom from summer through fall attracting butterflies and birds. Brown fruit appears after blossoms fall off. Grows well in sunny or partly shady locations.
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Baby's breath spirea vs. Japanese meadowsweet: What's The Difference?
Baby's breath spirea (Spiraea thunbergii) is a deciduous flowering shrub native to Asia. Baby's breath spirea grows on hillsides of hills. This species grows best in full sunlight.
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Bridalwreath spirea vs. Japanese meadowsweet: What's The Difference?
Bridalwreath spirea (Spiraea cantoniensis) is a plant species native to China. Bridalwreath spirea is generally cultivated as an ornamental plant used on the borders of gardens. Spiraea cantoniensis is also known by the common names Bridalwreath spirea, Double White May, and Cape May.
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Bridal wreath spirea vs. Japanese meadowsweet: What's The Difference?
Bridal wreath spirea (Spiraea prunifolia) is a flowering tree native to China Korea and Japan. Bridal wreath spirea is considered easy to grow and is often cultivated as an ornamental plant in gardens. It blooms in spring.
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Willowleaf meadowsweet vs. Japanese meadowsweet: What's The Difference?
Willowleaf meadowsweet (Spiraea salicifolia) is a deciduous perennial shrub that will grow to 1.8 m tall. It is often found in bogs or wet woodlands. It has twiggy branches and small simple leaves. It prefers full sun to partial shade.
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Steeplebush vs. Japanese meadowsweet: What's The Difference?
Steeplebush (Spiraea tomentosa) is a flowering plant species native to eastern North America. Steeplebush grows best in wet soil and full sunlight. This species is also commonly known as meadowsweet and hardhack.
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Asian meadowsweet vs. Japanese meadowsweet: What's The Difference?
Asian meadowsweet (Spiraea trilobata) is a hardy deciduous shrub that grows in a variety of soil types under full sun or partial shade. Its native range is central and eastern Asia, but its value as a garden plant has seen it spread throughout most of the world. Asian meadowsweet produces scores of small flowers that tend to attract butterflies.
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Japanese meadowsweet 'Gold Mound' vs. Japanese meadowsweet: What's The Difference?
Japanese meadowsweet 'Gold Mound' has a mound-like shape and offers lovely gold-yellow foliage in spring, which turn yellow-green in summer and yellow-orange in fall. It is a cultivar of Japanese meadowsweet and is named for its appearance. Gardeners favor this cultivar as it is generally resistant to diseases and pests..
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Key Facts About Japanese meadowsweet

Attributes of Japanese meadowsweet
Lifespan
Perennial
Plant Type
Shrub
Plant Height
1 m to 1.5 m
Spread
1.5 m to 2 m
Leaf Color
Green
Yellow
Flower Size
4 mm to 7 mm
Flower Color
Pink
White
Red
Fruit Color
Brown
Copper
Stem Color
Brown
Leaf type
Deciduous
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Scientific Classification of Japanese meadowsweet

Family
Rose
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Genus
Spirea
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Species
Japanese meadowsweet (Spiraea japonica)
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Distribution Map of Japanese meadowsweet

Japanese meadowsweet comes from the wetlands, forest edges, and meadows of East Asia. It was exported around the world as a garden ornamental, and has escaped to colonize wild areas in parts of eastern North America, Europe, and others. It is listed as invasive in the eastern United States.
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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