Black Mulberry (Morus nigra)

Black Mulberry

Morus nigra

Sweet, juicy fruits hang like dark jewels from gnarled branches. Deciduous fruiting tree; common name: black mulberry.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; produces more fruit in full sun, tolerates moderate shade in hot climates
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Watering Water deeply during dry spells; avoid overwatering to prevent root rot
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Temperature Hardy to -10°C; tolerates hot, dry summers with consistent moisture
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Characteristics

  • Leaf: Broad, heart-shaped leaves with serrated margins; dark green, rough texture
  • Flower: Inconspicuous green catkins; male and female flowers on separate trees (dioecious)
  • Fruit: Dark purple to black aggregate berries, sweet when fully ripe
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Care Guide

Watering

Water regularly during fruit development to prevent premature fruit drop

Fertilization

Apply balanced organic fertilizer in early spring before new growth. Avoid over-fertilizing to prevent excessive leaf growth at the expense of fruiting

Eggshell powder top-dress:Crush dried eggshells into fine powder; sprinkle lightly around the tree base, 10 cm away from the trunk to avoid rot
Pruning
  • Prune in late winter to remove dead, damaged, or crossing branches
  • Thin the canopy to improve air circulation and light penetration for better fruiting
  • Remove suckers growing from the base to maintain tree form and direct energy to main branches
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse effects

Humans: No known toxic effects for humans; ripe fruits are edible and nutritious

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Garden Uses & Culture

Culture: Fruits symbolize abundance in some Mediterranean traditions; cultivated for culinary use for millennia

Usage: Edible fruits for jams, pies, and fresh eating; ornamental shade tree for gardens