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Pacific Ninebark
( Physocarpus capitatus )
Physocarpus capitatus
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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39 Nurseries Carry This Plant
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About Pacific Ninebark (Physocarpus capitatus)
39 Nurseries Carry This Plant
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Physocarpus capitatus
(Pacific Ninebark) is a species in the Rosaceae (Rose) family native to western North America from southern Alaska east to Montana and Utah, and south to central California. It is found in the Coast Ranges and the Sierras. It is a dense deciduous shrub growing to 1 to 2.5 meters tall. The name comes from the appearance of the bark, which is flaky, peeling away in many layers. The shrub has distinctive maple-like lobed leaves 3-14 centimeter long and broad, and ball-like clusters of small white flowers with five petals and numerous red-tipped stamens. The unique fruit is an inflated glossy red pod which turns dry and brown and then splits open to release seeds. It is most often found near streams in association with wetland-riparian vegetation. Near the coast and at higher elevations it can take full sun. At lower elevation inland locations it benefits from part shade and moisture. It's leaves change color in fall before dropping. The extensive root system is useful for retaining soil on slopes. It makes a very attractive shrub or small tree for central to northern California gardens.
Plant Description
Plant Type
Shrub
Size
3.3 - 8.2 ft tall
8 ft wide
Form
Rounded
Growth Rate
Moderate, Fast
Dormancy
Winter Deciduous
Flower Color
White, Red
Flowering Season
Spring
Wildlife Supported
Numerous pollinator insects are attracted to the flowers
Butterflies & moths hosted ( 1
confirmed
, 7
likely
* )
SHOW ALL
Andropolia aedon
Andropolia aedon
*
Speckled Green Fruitworm Moth
Orthosia hibisci
Orthosia hibisci
*
Common Eupithacia
Eupithecia miserulata
Eupithecia miserulata
*
Blinded Sphinx
Paonias excaecata
Paonias excaecata
*
Oblique-Banded Leafroller Moth
Choristoneura rosaceana
Choristoneura rosaceana
*
Unicorn Caterpillar Moth
Schizura unicornis
Schizura unicornis
*
Hitched Arches
Melanchra adjuncta
Melanchra adjuncta
Landscaping Information
Sun
Shade, Part Shade
Moisture
Moderate - High, Low
Summer Irrigation
Max 1x / month once established
Nurseries
Carried by 39
Ease of Care
Very Easy
Cold Tolerance
Tolerates cold to 5° F
Soil Drainage
Medium
Soil Description
Tolerates a variety of soils as long as adequate moisture is present. Tolerates Serpentine Soil. Soil PH: 5.0 - 7.0
Common uses
Hedges, Groundcovers, Deer Resistant
Companion Plants
Can be used with a wide variety of woodland and northern chaparral plants including Firs (
Abies sp.
), Pipevine (
Aristolochia californica
), Dogwood (
Cornus sp.
),
Silk Tassel Bush
(
Garrya sp.
),
Douglas Fir
(
Pseudotsuga menziesii
),
Ponderosa Pine
(
Pinus ponderosa
), Sycamore (
Platanus racemosa
),
Cottonwood
s (
Populus sp.
),
Chokecherry
(
Prunus virginiana
), Currant/
Gooseberry
(
Ribes sp.
), and
Coast Redwood
(
Sequoia sempervirens
)
Maintenance
Can be pruned after leaves drop to achieve more upright habit and encourage vigorous leaf production in spring
Propagation
?
For propagating by seed: No treatment. gives poor germination; 2-3 mos. stratification may improve germination. Easily propagated from stem cuttings.
Sunset Zones
?
1, 2, 4*, 5*, 6*, 7*, 8, 9, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*, 22*, 23*, 24*
Natural Setting
Site Type
Moist banks and north facing slopes, usually in wetland-riparian community, often in mixed woodland or forest, usually below 5,000 ft.
Climate
Annual Precipitation: 16.2" - 113.6", Summer Precipitation: 0.17" - 4.01", Coldest Month: 28.0" - 51.0", Hottest Month: 47.3" - 77.2", Humidity: 0.01" - 23.93", Elevation: 4" - 8911"
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Pacific Ninebark
Physocarpus capitatus
Sources include:
Wikipedia
. All text shown in the "About" section of these pages is available under the
Creative Commons Attribution-ShareAlike License
. Plant observation data provided by the participants of the
California Consortia of Herbaria
, Sunset information provided by
Jepson Flora Project
. Propogation from seed information provided by the
Santa Barbara Botanical Garden
from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include
CalPhotos
,
Wikimedia Commons
, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include
Calflora
,
CNPS Manual of Vegetation Online
,
Jepson Flora Project
,
Las Pilitas
,
Theodore Payne
,
Tree of Life
,
The Xerces Society
, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from
PRISM Climate Group, Oregon State University
, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.
Links:
Jepson eFlora Taxon Page
CalPhotos
Wikipedia
Calflora
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