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Landscaping
Value:
Can be used as an informal hedging shrub, as a
specimen spring flowering shrub, or as part of a
foundation planting.
Retains interest in the winter due to glossy, mid
green arching stems.
Maintenance:
Pruning should be undertaken in the late spring
after flowering. Shrub can be thinned out by
one third, starting with the oldest stems.
Other stems can be cut to different levels at strong
side-shoots for a fuller, more balanced appearance.
To renovate an old shrub cut all the stems to the
ground in spring.
Due to its vigorous suckering habit plants spread
freely. Remove clumps or unwanted suckers to
keep clumps more compact.
Other
Cultivars:
K.
japonica ‘Picta’ ‘Aurea-variegata’ and ‘Variegata’
Kerria japonica ’Variegata’ is a dwarf clone,
reaching 3 feet tall. White-edged, gray-green
leaves and single yellow flowers. Found at the
entrance to the Yao Garden. |
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References:
Brenzel, Kathleen N. Ed. Sunset Western
Gardening Book. 1995. Sunset pub. Menlo
Park, Ca.
Brickell, Christopher. Ed. Pruning and
training. 1996. DK Pub. New York.
Time-life books. Ed. Pick the Right
Plant. 1998 Time-Life Inc. USA |
|
at
a glance:
Common Name:
Japanese
rose, globeflower kerria
Location: Various
locations inside Yao Japanese Garden
Plant type: :
Deciduous shrub
Family:
Rosaceae
Height/Spread:: 4
– 12 feet high, 3 – 8 feet wide
Leaves:
Medium
green leaves, glabrous on the upper surface, hirsute underneath.
Margins are coarsely toothed and taper to a round base. Alternate,
1.5- 4 inches long and ovate – lanceolate in shape. Turn yellow in
fall.
Flower: Very
double, vivid yellow. 1-2 inches wide. Solitary at tips of previous
years growth.
Height/spread:
Open,
arching. 5-8 feet high, 3-6 wide
Disease/pests: No
significant problems
Bloom Period:
March –
May, and often again in fall, less profusely
Conditions:
Tolerates both full sun and full shade, but flowers better in partial
shade. May have some leaf scorch in full sun. While adaptable to most
soils it thrives in moist, well -drained, humus-rich soils. Drought
tolerant once established. Over-fertilization reduces bloom.
Natural Range:
China,
from West Sichuan eastward to Japan, where it has naturalized.
Hardiness:
Zones
5-9. Branch tips may die back in zones 5 and 6. |
