Red Mulberry (Morus rubra)

Red Mulberry

Morus rubra

Its heart-shaped leaves shade sweet summer fruit, a quiet backyard staple. Deciduous fruiting tree; common name: red mulberry.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; full sun promotes maximum fruit production, while partial shade tolerates hot summer climates
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Watering Water deeply when the top 5–7 cm of soil is dry; avoid overwatering to prevent root rot in poorly drained soil
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Temperature Hardy to -20°C; tolerates summer temperatures up to 35°C; enters dormancy in cold winter months
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Characteristics

  • Leaf: Heart-shaped with serrated margins, 7–18 cm long; rough upper surface, soft fuzzy underside
  • Flower: Small greenish catkins; male and female flowers on separate dioecious trees
  • Fruit: Edible red to purple-black aggregate berries, 2–3 cm long, ripening in mid-summer
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Care Guide

Watering

Keep soil consistently moist during fruiting season; reduce watering if natural rainfall meets moisture needs

Fertilization

Apply balanced organic fertilizer in early spring before new growth emerges. Avoid over-fertilizing, as excessive nitrogen can reduce fruit production

Banana peel compost tea:Compost banana peels fully to break down sugars; dilute 1:25 with water for root drenching to support fruit ripening; avoid raw peels to prevent pest infestations
Pruning
  • Prune dead, damaged, or crossing branches in late winter to improve canopy airflow
  • Thin overcrowded growth to increase light penetration for better fruit set
  • Remove suckers growing from the base to maintain the desired tree form and reduce overcrowding
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; fruit may cause mild gastrointestinal upset if overconsumed

Humans: No known systemic toxicity; unripe fruit may cause mild stomach irritation if ingested in large amounts

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Garden Uses & Culture

Culture: Symbolizes abundance and nourishment in some Eastern North American indigenous traditions

Usage: Edible fruit for fresh eating, jams, or baking; ornamental shade tree for residential landscapes