Spiraea nipponica
Common Name(s):
Spirea
Snowmound spirea
Synonym:
Spirea nipponica var. snowmound
Nippon spirea
Flower:
White
Blooms :
May
to:
Jun
Small five petaled white flowers in clusters
Botanical Description
Fragrant?
NO
Family:
Rosaceae
Med - Lg Shrub (usually >3' and never < 1.5')
Foliage:
Green
Leaves obovate to elliptical 1.25" long
Fall Color?
YES
Leaves turn yellow
Deciduous
Photo by:
Heading 6
Oregon Native?
NO
West State Native?
NO
Origins:
Japan
Site Selection
Minimum USDA Hardiness Zone:
3
Water Needs:
M
Sun Needs:
Partial Sun
Deer Resistant?
YES
Firewise?
YES
Height:
2-4'
Spread:
2-4'
Growth Rate:
Medium
Native Habitat:
Rocky sandy areas
Soil:
Average moist well-drained
Care Recommendations
Maintenance Level:
Medium
Fertilizer:
Single application of a balanced 10-10-10 slow-release fertilizer in early spring
Mulch:
2-3" layer of bark or compost
Thrives in full sun, water if extended dry periods, prune after flowering, mulch
Long Term:
Winter:
Prune late winter, mulch if not done in fall
Spring:
Prune early spring before flower buds start to grow, fertilize, give consistent water, apply compost or organic mulch
Summer:
Prune spent flowers for nice appearance, water if extended dry periods, mulch, monitor for pests
Fall:
Prune for shape and size, ensure soil remains moist, mulch
General Care Comments:
Low maintenance plant, give full sun, water to establish then only during extended dry periods, needs well-drained soil, feed once a year in early spring
Common Problems
Intolerant of dry, hot summers
Diseases:
Leaf spot, fireblight, powdery mildew
Insects:
Aphids, leaf rollers, scale
Environmental Problems:
None
Pests:
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