# Japanese Kerria (*kerria japonica*)

Japanese Kerria is a beautiful, deciduous shrub in the rose family Rosaceae, native to the mountain valleys of China and Japan. Known for its arching, slender, bright green stems, this hardy plant brings exceptional year-round interest to woodland edges and gardens alike. In mid to late spring, it bursts into a spectacular display of bright golden-yellow flowers that resemble miniature wild roses, providing an early source of nectar for pollinators. Historically cherished in Japanese culture, where it is known as 'Yamabuki', this resilient shrub is exceptionally shade-tolerant, spreading via underground runners to form attractive, dense thickets.

- **Category:** [Plants](https://www.snappit.app/explore/categories/plant)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Snaps:** 1
- **Habitat:** Found in moist mountain thickets, valleys, and forest margins, often along streamsides or within damp woodland settings.

![Japanese Kerria](https://inaturalist-open-data.s3.amazonaws.com/photos/386186017/medium.jpg)

Photo: Hrishikesh Bhaskaran, CC BY-SA 4.0 · [iNaturalist](https://www.inaturalist.org/photos/386186017)

## Appearance

This deciduous shrub reaches 100 to 300 centimeters in height, characterized by its distinctive arching, zig-zag, bright-green stems that remain green throughout the winter. Its leaves are alternate, simple, ovate-lanceolate, and sharply doubly-serrated with prominent veins, turning a soft yellow in autumn. The flowers are solitary, 3 to 5 centimeters across, with five bright golden-yellow petals, though cultivated double-flowered varieties feature dense, pom-pom-like blooms.

## Taxonomy

- **Kingdom:** Plantae
- **Phylum:** Tracheophyta
- **Class:** Magnoliopsida
- **Order:** Rosales
- **Family:** Rosaceae
- **Genus:** Kerria

## Interesting facts

- It is a monotypic genus, meaning Kerria japonica is the only species classified within the genus Kerria.
- The Japanese name 'Yamabuki' translates directly to mountain breath and also refers to a specific traditional Japanese shade of golden-yellow.
- The double-flowered cultivar 'Pleniflora' is so popular that it is often encountered more frequently in western gardens than the wild single-flowered form.

## Special abilities

- **Winter Photosynthesis:** The bright green bark of its stems contains chlorophyll, enabling the plant to continue photosynthesizing and producing energy even after shedding its leaves in winter.
- **Clonal Colonization:** It spreads vigorously using underground stolons, allowing it to form dense, protective thickets that prevent soil erosion and outcompete other understory plants.
- **Shade Tolerance:** Unlike many other members of the Rose family, it can grow, thrive, and bloom successfully in deep woodland shade.

## Measurements & details

- **Length:** 100-300 cm
- **Lifespan:** 10-30 years

## Diet & Feeding

As a photoautotrophic plant, it utilizes sunlight, water, and atmospheric carbon dioxide to produce glucose via photosynthesis, while drawing essential minerals from the soil.

- **Primary Foods:** Sunlight, Carbon Dioxide, Water, Nitrogen, Phosphorus, Potassium

## Ecological connections

- **Mutualism:** Western Honey Bee (*Apis mellifera*) — Bees visit the single-petaled varieties to forage on nectar and pollen, aiding in pollination.
- **Eaten by:** [Japanese Beetle](https://www.snappit.app/explore/japanese-beetle) (*Popillia japonica*) — Japanese beetles frequently feed on the foliage during the mid-summer months.

## Safety

**Danger:** 1/5 · Very low

No special safety notes yet.

## Frequently Asked Questions

### How to identify Japanese Kerria?

Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details.

### How long is Japanese Kerria?

100-300 cm

### How long does Japanese Kerria live?

10-30 years

### What does Japanese Kerria eat?

As a photoautotrophic plant, it utilizes sunlight, water, and atmospheric carbon dioxide to produce glucose via photosynthesis, while drawing essential minerals from the soil.

### Where is Japanese Kerria usually found?

Found in moist mountain thickets, valleys, and forest margins, often along streamsides or within damp woodland settings.

## Where to spot

- [Chambers County Courthouse Square Historic District](https://www.snappit.app/guides/places/chambers-county-courthouse-square-historic-district) — Alabama, US · Historic District
- [Sara D. Roosevelt Park](https://www.snappit.app/guides/places/sara-d-roosevelt-park) — New York, US · Park

## More Plants

- [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*)
- [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*)
- [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*)
- [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*)

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Source: [Japanese Kerria: Facts & Places to See — Snappit](https://www.snappit.app/explore/japanese-kerria)