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Pacific ninebark

Physocarpus capitatus

Last reviewed: September 2026

Pacific ninebark (Physocarpus capitatus)

Toxicity unknown

Pacific ninebark (Physocarpus capitatus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part sun

Water

medium

Size

60"–180" H × 60"–120" W

Bloom

May, Jun

Native to

CA, ID, OR, WA

Pollinators

bees, butterflies

Before you buy

Your city may pay you to plant this

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A multi-stemmed deciduous shrub with maple-like lobed leaves, rounded clusters of small white flowers in late spring, and papery reddish seed pods. Peeling, shredding bark adds winter interest along streambanks and wet thickets.

Wildlife value

Flowers attract native bees and butterflies, and the dense branching provides nesting cover for songbirds near water.

Common questions

How much sun does Pacific ninebark need?
Pacific ninebark grows best in part sun conditions.
When does Pacific ninebark bloom?
Pacific ninebark blooms in May and June.
Where is Pacific ninebark native?
Pacific ninebark (Physocarpus capitatus) is native to CA, ID, OR, WA, per the World Checklist of Vascular Plants (Kew).
What pollinators does Pacific ninebark attract?
Pacific ninebark draws bees and butterflies.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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Ready to grow Pacific ninebark? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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