Spiraea douglasii
Douglas's Spirea
Rose Spirea
Western Spiraea
Plant Family:
Rosaceae
Med - Lg Shrub (usually >3' and never < 1.5')
Flower:
Pink
Blooms :
Jun
to:
Sep
Tiny, fragrant reddish
pink flowers are borne in dense, elongate clusters at the
end of shoots. The clusters appear ?fuzzy? from the
abundance of long stamens
Botanical Description
Fragrant?
Yes
Foliage:
Green
Not Found
Pat Kolling
Oval green leaves (to 4? long) are felty white-tomentose beneath.
Oregon Native?
Yes
West State Native?
Yes
Rose spirea occurs naturally from southern
Alaska south to northern California and east to western
Montana. The elevation range is sea-level to 6,500 ft in
the mountains.
Site Selection
Minimum USDA Hardiness Zone:
4
Water Needs:
M
Sun Needs:
Partial Sun
Deer Resistant?
Yes
Firewise?
Yes
Height:
2-7'
Spread:
3-6'
Growth Rate:
Fast Growing
Native Habitat:
Rose spirea grows best in full sun to dappled shade and in
a wide range of soils (gravelly sandy loams to heavy
clays) that range from acidic to neutral (pH 4.5-7.5) and
from moist well drained to wet and poorly drained
(hydric). The species tolerates ext
Soil:
Prefers sandy or loamy soils. Does not grow well in clay soils.. Soil PH: 5 - 7
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Mulch:
Long Term:
This species can become invasive, as it
spreads readily by suckers and seedlings, especially on
flat, moist to wet sites in full sun. Dense thickets can
become nearly impenetrable and too competitive for other
desirable plant species. It may not be suitab
Winter:
Spring:
Summer:
Fall:
Common Problems
No serious insect or disease problems. Susceptible to fireblight, leaf spot, powdery mildew and die back. Potential insect pests include aphids and scale.
Diseases:
Rose spirea may be susceptible to fire blight disease
which causes dieback of tips and scorched looking leaves.
Insects:
It is host to several insect pests including aphids, leaf
rollers, and scales.
Also called: