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Native Range: AK & BC south to northern CA; inland ID–MT–WY; east to ON/MI/MN/SD (high-elevation and northern forests)
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USDA Zones: 4–8 (Zone 9 generally too warm except coolest coastal pockets)
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Ease of Care: Difficult
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Deer Resistance: Low
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Light Requirements: Full sun to part shade; give afternoon shade in hot, low-elevation sites
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Soil Type: Strongly acidic, well-drained, organic-rich (pH ~4.3–5.5 ideal)
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Water Requirements: Moist to well-drained; moderate drought tolerance once established; best fruit with steady summer moisture
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Pollination: Self-fertile; bee activity important; multiple plants improve set
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Bearing Age: ~3–5 years (earlier from divisions; seed-grown can take longer)
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Size at Maturity: 3–6 ft (upright, rhizomatous clumps)
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Plant Spacing: 3–5 ft (closer for hedging; wider for airflow)
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Bloom Time: May–July (later at higher elevations/snowpack)
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Harvest Time: August–September (earlier at low elevations; later in high country)
References
[1] USDA PLANTS Database — species profile.
[2] Flora of North America — taxon treatment.
[3] Jepson eFlora — California distribution/habitat notes.
[4] Oregon State University Landscape Plants — horticultural notes.
[5] Moerman, Native American Ethnobotany — Indigenous food use.
[6] USFS Plant Guides — wildlife value & ecological roles.
[7] Native Plant Network & Extension publications — cultivation guidance.
[8] Pojar & MacKinnon, Plants of the Pacific Northwest Coast — ecology & natural history.
[9] Turner, Food Plants of Coastal First Peoples — cultural tending & food use.
[10] Peer-reviewed nutrition/phytochemistry papers — antioxidant & vitamin content.