Pacific ninebark, Physocarpus capitatus
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Range
Ø
West side of the Cascades from southern
Climate, elevation
Ø Moist,
mild climate; low to middle elevations (2)
Local occurrence (where,
how common)
Ø Often
grows along streams and lakeshores in wooded areas, often in ash swales and
other wetlands; can also grow near coastal marshes and wet meadows (1 and 3)
Habitat preferences
Ø Full
to partial sun (2)
Ø Somewhat
open areas on margins of lakes and streams (3)
Ø Moist
to wet areas with well drained soils (2)
Plant strategy type/successional stage (stress-tolerator,
competitor, weedy/colonizer, seral, late successional)
Ø Can tolerate fluctuating water levels and prolonged soil saturation (2)
Ø Has excellent soil binding ability (2)
Associated species
Ø Sedges
(Carex spp.),
salmonberry (Rubus spectabilis),
red-osier dogwood (Cornus stolonifera), and lady fern (Athyrium
filix-femina) (1)
May be
collected as: (seed, layered, divisions, etc.)
Ø Seed (4)
Ø Harwood cuttings and live-staking (4)
Ø Salvage for plants under six feet tall (2)
Collection restrictions or guidelines
Ø Collect
seeds in late August to September (2)
Ø Cuttings
can be taken at any time of year (2)
Seed germination (needs
dormancy breaking?)
Ø Cold
stratification often for 2-3 months (2 and 4)
Seed life (can be stored,
short shelf-life, long shelf-life)
Ø Best
if planted immediately after collection
Recommended seed storage conditions
Ø Best
if planted immediately after collection
Propagation recommendations (plant seeds, vegetative parts, cuttings, etc.)
Ø Plant
seeds in fall on-site or in the greenhouse to get germinates the following spring
(4)
Ø
Cuttings or salvaged plants can be
planted into containers and stored until established (2)
Soil or medium requirements (inoculum necessary?)
Ø Well-drained
soil (4)
Installation form (form, potential for successful outcomes, cost)
Ø Established
cuttings
Ø Established
salvage material
Ø Direct
seeding
Ø Live-stakes
Care requirements after installed (water weekly, water once etc.)
Ø
Soil must be kept consistently moist
Sources cited
1.
Guard, B. Jennifer. Wetland Plants of
2.
Leigh, Michael. Grow Your Own Native
Landscape. Native Plant Salvage Project,
3.
Pojar,
Jim and Andy MacKinnon. Plants of the
4.
Stevens, M. and R. Vanbianchi.
1993. Restoring Wetlands in
5.
USDA, NRCS. 2002. The PLANTS Database,
Version 3.5 (http://plants.usda.gov).
National Plant Data Center,
Data compiled by:
Crystal Elliot,