WSU Clark County Extension

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Pacific Ninebark

Scientific name: Physocarpus capitatus

Taxonomy
Family:Rosaceae
Type:Deciduous shrubs
Native:YES
Plant Requirements
Zone:4 to 10
Sun:Full to partial sun
Moisture:Medium
Plant Characteristics
Height:15 ft
Width:15 ft
Bloom:Showy flowers
Bloom Time:May to June
Bloom Color:White
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Best known for the profusion of white, dome-shaped flowers, Pacific Ninebark is widely planted as a Northwest native. Land managers greatly appreciate its ability to knit the soil together along side of a stream.

  Morphology:
Pacific Ninebark is a large deciduous shrub that can grow to 15’ in both height and width. The leaves are green and have 3 distinctive lobes, resembling those of red maple. Leaf margins are serrated.

Flowers emerge in late spring and are attractive to bees and butterflies. The white blossoms morph to papery red fruits with yellow seeds in the fall which provide food for song birds.

The bark consists of many layers, hence the name Ninebark.

  Adaptation:
This species does well in either full sun or shade. Pacific Ninebark prefers moist soils. It is often found growing along streams, lakes, bogs and other moist sites.

  Pests:
None reported.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
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