Kerria japonica 'Pleniflora' (Double Flowering Kerria, Japanese Kerria)
Michael's Opinion
An Asian species that has been found in our gardens for quite some time. It produces long green foliage that is refreshing in the garden and forms a clump over time. It requires shade and prefers moist soils although it will tolerate dry soils once it is established.
Botanical Information
| Family | Rosaceae |
| Genus | Kerria |
| Species | japonica |
| Cultivar | 'Pleniflora' |
| Category | Woody |
| Type | Shrub (deciduous) |
| Pronunciation |
Details
| USDA Hardiness Zone | 5 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 6 |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 |
| RHS Hardiness Ref. | |
| Temperature (°C) | (-32) - (-1) |
| Temperature (°F) | (-25) - 30 |
| Height | 1.5 - 2 m |
| Spread | 2 m |
| Growth | Fast |
| Flowering Period | April, May |
Description and Growing Information
| General Description | Fluffy, ball-like yellow double flowers and bright green showy stems, this stunning cultivar is an excellent garden addition as a border or hedge. |
| Landscape | Shrub boarders, hedge or screen. |
| Cultivation | Well drained soil in full sun or partial shade. |
| Pests | Susceptible to leaf spots, cankers, blights and root rot. |
| Notable Specimens | The A.M. (Mac) Cuddy Garden, Strathroy, Ontario. |
| Habitat | Horticultural origin. |
| Leaf Description | Light green, turning yellow in autumn, double toothed, narrow and ovate-lanceolate. |
| Flower Description | Beautiful rounded, vibrant yellow double flowers. |
Photographs
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