Ninebark (Physocarpus opulifolius)

Ninebark

Physocarpus opulifolius

Peeling bark adds year-round textural charm. Deciduous flowering shrub; common name: ninebark.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun enhances foliage color intensity and flowering
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Watering Water deeply when top 2–3 cm of soil is dry; drought-tolerant once established
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Temperature Hardy to -30°C; adaptable to temperate and cold climates, tolerates mild summer heat
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Characteristics

  • Leaf: Lobed, serrated edges; variable color (green, purple, gold) depending on cultivar
  • Flower: Clusters of small white or pinkish-white umbels that attract pollinators
  • Stem/Bark: Mature stems have peeling, papery bark in brown or reddish tones
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Care Guide

Watering

Water regularly during establishment; reduce frequency once mature

Fertilization

Apply balanced slow-release feed once. Avoid over-fertilizing to prevent leggy growth and reduced flowering

Composted banana peel tea:Soak fully composted banana peels in water for 24 hours, dilute 1:20 for root drench; discard solids to prevent pests and odor
Pruning
  • Prune immediately after flowering to shape the shrub and remove spent blooms
  • Thin overcrowded branches to improve air circulation and reduce disease risk
  • Remove dead or damaged stems in late winter to encourage vigorous new growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

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Garden Uses & Culture

Culture: Symbolizes resilience due to its cold hardiness and durable peeling bark

Usage: Ornamental shrub for hedges, borders, or mass plantings; attracts bees and butterflies