Marionberry (Rubus 'Marion')

Marionberry

Rubus 'Marion'

Plump, juicy berries balance tart and sweet, a summer staple for Pacific Northwest gardens. Deciduous fruiting shrub; common name: Marion blackberry.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Requires 6–8 hours of direct sunlight daily for optimal fruit production; tolerates partial shade in hot climates
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Watering Keep soil consistently moist during fruiting season; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; tolerates summer temperatures up to 32°C with consistent moisture
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Characteristics

  • Leaf: Compound trifoliate leaves with serrated edges, dark green glossy upper surface, pale fuzzy underside
  • Flower: Small, fragrant white five-petaled blooms in loose clusters
  • Stem: Thorny arching canes with biennial growth (floricanes fruit then die back)
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Care Guide

Watering

Increase watering during fruit development; avoid wetting foliage to prevent fungal disease

Fertilization

Apply balanced organic feed in early spring before new growth. Avoid high-nitrogen fertilizers to prevent excessive leaf growth over fruiting

Composted banana peel tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid applying directly to foliage
Pruning
  • Prune spent fruiting floricanes to ground level immediately after harvest
  • Thin overcrowded primocanes in late winter to 4–6 healthy canes per linear meter
  • Train remaining canes to trellis wires to improve airflow and simplify harvesting
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no adverse effects from ingestion of leaves or berries

Humans: No known toxicity; ripe berries are safe for human consumption

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Garden Uses & Culture

Culture: N/A

Usage: Edible fruit for fresh eating, jams, pies, and syrups; ornamental fruiting shrub for backyard gardens