Japanese kerria.

En un coup d'œil

Niveau d'entretien

Facile

Type de plante

Deciduous shrub

Lumière

Partial shade to full sun

Lumière en intérieur

Lumière vive indirecte

Arrosage

Tous les 7 à 14 jours

Taille adulte

6 to 8 feet

Croissance

Moyenne

Rusticité

USDA 4 à 9

Floraison

Mid to late spring

Entretien

Plant this shrub in well-draining soil and prune it right after it finishes flowering to encourage new growth. Watch for wilting leaves, which may indicate the soil has dried out too much. It is quite hardy, but it appreciates a spot protected from harsh afternoon sun.

Arrosage

Keep the soil consistently moist but not waterlogged, especially during the first year of growth.

Engrais

Apply a balanced, slow-release fertilizer in early spring as new growth begins.

Taille

Prune back old or flowered stems immediately after the spring bloom to maintain shape.

Rempotage

If growing in a container, move to a larger pot every few years when the roots become crowded.

Sol

Well-draining, fertile soil

pH du sol

6.0 to 7.5

Température

-25 à 35°C

Humidité

40 à 70%

Résistance à la sécheresse

Moyenne

Durée de vie

Perennial, typically 15 to 20 years.

Résistance aux chevreuils et lapins

Moyenne

Sécurité

Humains

The plant is generally considered non toxic to humans.

Enfants

The stems are somewhat brittle, but there are no significant ingestion risks for children.

Allergènes de contact

No specific skin irritants are known.

Allergènes aéroportés

Pollen may cause mild reactions in sensitive individuals during the spring.

Comestibilité

This plant is not considered edible and should not be consumed.

Comment l'identifier

• Bright yellow, rose-like flowers
• Arching, bright green stems
• Alternate, serrated, lance-shaped leaves
• Deciduous shrub growth habit

Hauteur

1 à 2,5m

Envergure

1,5 à 3m

Feuilles

bright green, deciduous

Fleurs

yellow, 3 à 5cm

Problèmes courants

• Twig blight — Fungal infection causing dieback of stems.

La cultiver

Multiplication

cuttings, division

Quand planter

spring, autumn

Hivernage

No special winter care is needed as it is quite hardy. You can mulch around the base to protect the roots if you live in a very cold climate.

En pot

It can be grown in large containers, but it prefers being planted in the ground for long term health.

Pair this shrub with shade loving perennials to create a lush, low maintenance woodland border.

Bonnes associations

• Hosta — They share similar light requirements and provide a nice foliage contrast.
• Lamprocapnos spectabilis — Both plants bloom in spring and appreciate the same woodland conditions.

Espèces similaires

• Forsythia x intermedia — Both are spring flowering shrubs with yellow blooms.

Science

Famille

Rosaceae

Genre

Kerria

Ordre

Rosales

Classe

Magnoliopsida

Région d'origine

China, Japan, and the Korean Peninsula.

Préservation

This species is not of conservation concern.

It naturally grows in thickets and along forest edges where it benefits from dappled light.

Intérêt pour la faune

nectar source

Pollinisateurs

abeilles, papillons

Utilisations

ornamental shrub, woodland garden, foundation planting

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Does it need pruning?

Pruning immediately after flowering helps keep the shrub tidy and encourages new growth.

Can it grow in full sun?

It prefers partial shade, as hot afternoon sun can fade the yellow flowers.

D'où vient le nom

The genus is named after William Kerr, a Scottish gardener who introduced the plant to the West. The specific epithet refers to its native range in Japan.

Bon à savoir

• It is the only species in its genus.
• The bright green stems remain colorful even in winter.
• It thrives in partial shade where other shrubs might struggle.