Blackberry (Rubus fruticosus)

Blackberry

Rubus fruticosus

Juicy dark berries hang in clusters, a summer treat for wildlife and humans alike. Deciduous fruiting shrub; common name: blackberry.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; produces more fruit in full sun, tolerates dappled shade in hot climates
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Watering Water deeply during dry fruiting periods; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; thrives in temperate climates; protect young canes from extreme late frost
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Characteristics

  • Leaf: Compound pinnate leaves with 3–5 serrated leaflets, dark green above, pale fuzzy underside
  • Flower: Small white or pale pink five-petaled flowers in terminal clusters
  • Stem: Thorny, arching canes that root at tips to spread colonies
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Care Guide

Watering

Water deeply 1–2 times weekly during fruiting to support berry development

Fertilization

Feed with balanced organic fertilizer in early spring. Avoid high-nitrogen fertilizers to prevent excessive leaf growth over fruit production

Composted banana peel tea:Soak fully composted banana peels in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Prune old fruiting canes to ground level immediately after harvest to encourage new productive growth
  • Thin overcrowded canes in early spring to improve airflow and reduce disease risk
  • Trim trailing canes to maintain desired hedge shape and limit uncontrolled spread
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; safe for cats to nibble

Humans: Ripe berries are edible; unripe fruit may cause mild stomach upset if consumed in large quantities

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Garden Uses & Culture

Culture: Symbolizes summer abundance; historically used in European folk medicine for mild sore throats

Usage: Edible fruit for jams, pies, and fresh consumption; ornamental thorny hedging for privacy