Alphabetical Plant Listing

Physocarpus capitatus (Pacific Ninebark)

Pacific Ninebark


Fast-growing, Physocarpus capitatus (Pacific Ninebark) is a dense deciduous shrub with an exquisite vase shape and incredibly decorative exfoliating bark. Profuse white flowers, with five petals and many red-tipped stamens, appear in dense, rounded clusters, 3-5 in. wide (7-12 cm), in late spring to mid summer. They give way to drooping clusters of glossy red pods which turn brown and then splits open to release their seeds. Rich in nectar, the blossoms attract plenty of beneficial insects. The flowers contrast beautifully with the interesting maple-like foliage of green lobed leaves, which warms up to intense red to subtle rose-brown in the fall. Hidden by the foliage during the growing season, the bark is revealed in all its splendor later in the season, peeling in long irregular strips to display layers of reddish to light brown inner bark, providing winter interest. Providing good shelter and nesting sites for birds and small mammals, Pacific Ninebark is a splendid screening and hedge plant. Its extensive root system is also useful for retaining soil on slopes.

  • Grows up to 5-10 ft. tall and wide (150-300 cm).
  • A full sun to part shade lover, this plant is easily grown in moderately fertile, humus-rich, slightly acidic, consistently moist, well-drained soils. Can become drought tolerant.
  • Perfect as a specimen plant or planted in groups. Great for mixed shrub borders, hedges and screens or banks and slopes.
  • No serious pest or disease issues. Keep an eye out for powdery mildew. Deer resistant.
  • May be cut back in winter to rejuvenate and encourage vigorous leaf production in spring.
  • Propagate by seed or stem cuttings. 2-3 months stratification may improve germination.
  • Prune as required immediately after bloom
  • Native to western North America from southern Alaska east to Montana and Utah, and south to central California.

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Requirements

Hardiness 5 – 10
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19
Plant Type Shrubs
Plant Family Physocarpus - Ninebark
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid)
Fall
Height 5' – 10' (150cm – 3m)
Spread 5' – 10' (150cm – 3m)
Spacing 60" – 120" (150cm – 300cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Native Plants United States, Alaska, California, Pacific Northwest, Idaho, Oregon, Washington
Tolerance Deer, Drought
Attracts Butterflies
Garden Uses Banks and Slopes, Hedges and Screens, Rain Gardens
Garden Styles Informal and Cottage

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By lenic, Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 10
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19
Plant Type Shrubs
Plant Family Physocarpus - Ninebark
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid)
Fall
Height 5' – 10' (150cm – 3m)
Spread 5' – 10' (150cm – 3m)
Spacing 60" – 120" (150cm – 300cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Native Plants United States, Alaska, California, Pacific Northwest, Idaho, Oregon, Washington
Tolerance Deer, Drought
Attracts Butterflies
Garden Uses Banks and Slopes, Hedges and Screens, Rain Gardens
Garden Styles Informal and Cottage

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