Details of...
Scientific Name: Kerria japonica
Pronunciation: KAIR-ee-uh juh-PON-ih-kuh
Common Name: Japanese kerria
Family Name: Rosaceae
Plant Type: Shrub - deciduous
Key ID Features: Twiggy, arching, deciduous shrub; leaves are alternate, double serrate, with deep veins; flowers bright yellow in early spring. Winter ID: stems slender, green (yellow-green in winter) and contrast with dark buds.
Course(s): Level 3 Apprenticeship

Habit: Spreading
Form: Round, Vase
Texture: Medium
Mature Size:
Height:2 - 3m
Spread:2 - 3m
Growth Rate:Fast
Origin: South Asia / India
Hardiness Rating: Zone 5: (-29 to -23 C)
Exposure: Filtered shade, Full sun, Part sun/part shade
Soil/ Growing Medium: Well-drained
Water Use: High, Moderate
Landscape Uses: Hedge row, Mixed shrub border, Woodland margin
Additional Info: Google. Most images are of K. ‘Pleniflora’ (numerous petals).
Japanese kerria
Leaf Morphology: Glossary
Form: Simple
Arrangement: Alternate
Texture/ Venation: Pinnate venation
Colour in Fall: Yellow
Leaf(let) Terms:
Shapes: Lanceolate
Apices: Acuminate
Bases: Cordate
Margins: Double serrate, Serrulate

Inflorescence Type: Flowers solitary
Flower Morphology:
Ovary Position:Inferior
Colour (petals): Showy, Yellow
Flower Scent: Sweet
Flower Time at Peak: Apr, May

Fruit Type: Achene, Follicle
Fruit Colour: Dark-red, Brown
Fruiting Time: Jun, Jul
Additional Info: Not showy

Bark Morphology: Smooth
Bark or Stem Colour: Green

Propagation: Greenwood cuttings, Division - above ground parts
Plant Care:
Pest Susceptibility: Blight or needle cast, Canker or sap rot, ( Pest resistant, Disease resistant, Deer resistant )
(CGW) Community Garden West
(WDH) Wark-Dumais House : 179
Location Map

Report an Error