Woody > Kerria > Kerria japonica > Kerria japonica
Kerria japonica
Japanese Kerria
Mike's
Opinion
"
A great shrub for a garden as an informal hedge, the golden yellow flowers are beautiful in bloom and the green stems add colour to your garden in the winter months.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Rosaceae |
| Genus |
| Kerria |
| Species |
| japonica |
| Category |
| Woody |
| Type |
| Shrub (deciduous) |
| Pronunciation |
| USDA Hardiness Zone |
| 4 - 9 |
| Canadian Hardiness Zone |
| 2a - Requires cool season protection under glass. |
| RHS Hardiness Zone |
| H4 - H7 |
| Temperature (°C) |
| -35 - (-1) |
| Temperature (°F) |
| -30 - 30 |
| Height |
| 2 m |
| Spread |
| 1.5 m |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| General Description |
| Small golden flowers, bright green stems year round, deeply veined leaves. |
| Cultivation |
| Should be planted in fertile, well drained soil, can be grown in full sun or in with partial shade if there is sufficient moisture. |
| Shape |
| Loose, unkempt and somewhat open. |
| Growth |
| Fast |
| ID Characteristic |
| Kerria japonica has distinct saucer shaped golden yellow flowers. Alternate deeply veined leaves and over sized leaves on none flowering stems. |
| Pests |
| Twig blight and root rot along with cankers are issues that can affect the plant but they are not common. |
| Bark/Stem Description |
| Very distinct colour, bright green all through the winter, turns a yellow-green occasionally in autumn. |
| Flower/Leaf Bud Description |
| Greenish brown, usually with five exposed scales. |
| Leaf Description |
| Alternate, double serrate leaves, bright green to 4 cm long, half as wide. petiole is 4-6 mm long, over sized leaves are found on non-flowering stems. |
| Flower Description |
| Saucer shaped golden yellow flowers with 5 petals, the flowers bloom mid-May and have some prominent stamens. |
| Fruit Description |
| The fruits are diminutive and a brown-black colour; nutlike. |
| Colour Description |
| Beautiful bright yellow flowers, with greenish- brown buds, stems are a bright green, that retains that colour all year. |
| Texture Description |
| Fine texture in winter and in leaf. |
| Notable Specimens |
| The A.M. (Mac) Cuddy Garden, Strathroy, Ontario, Canada. |
| Propagation |
| By clump division, layers or summer cuttings. |
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