Italian Plum (Prunus domestica subsp. italica)

Italian Plum

Prunus domestica subsp. italica

Sweet, juicy fruits balance delicate spring blooms with summer harvest. Deciduous fruiting tree; common name: Italian plum.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires full sun for optimal fruit production; tolerates partial shade but will reduce yield and bloom density
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Watering Water deeply when the top 5–10 cm of soil is dry; avoid overwatering to prevent root rot and fungal diseases
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Temperature Hardy to -15°C; requires 800–1000 chill hours to break dormancy; protect young trees from late spring frosts
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Characteristics

  • Leaf: Oval to lanceolate with serrated margins, glossy medium green, turning pale yellow in autumn
  • Flower: Clusters of 2–3 fragrant white 5-petaled blossoms, appearing before leaves
  • Fruit: Oval fleshy drupe, purple or yellow skin, sweet juicy yellow flesh when ripe
  • Stem: Smooth light brown bark, becoming fissured and dark brown with maturity
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Care Guide

Watering

Keep soil consistently moist during fruit development; reduce watering as fruits begin to ripen to improve flavor

Fertilization

Apply balanced slow-release fertilizer (10-10-10) before bud break. Avoid high-nitrogen fertilizers late in the growing season to prevent delayed dormancy

Eggshell powder topdressing:Crush dried eggshells into a fine powder; sprinkle 1–2 tablespoons around the base of the tree; water gently to incorporate into soil
Pruning
  • Prune in late winter (before bud break) to remove dead, diseased, or crossing branches
  • Thin fruiting spurs to 4–6 buds per spur to improve air circulation and increase fruit size
  • Shape the canopy to maintain an open structure for sunlight penetration to inner branches
  • Remove suckers growing from the base of the tree to direct energy to the main canopy and fruit production
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; leaves, stems, and seeds contain cyanogenic glycosides that can cause systemic distress if ingested

Humans: Only seeds contain cyanogenic glycosides; ripe fruit flesh is safe for consumption; ingesting chewed seeds may cause mild to moderate gastrointestinal distress

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Garden Uses & Culture

Culture: Symbolizes abundance and renewal in Mediterranean folklore; often used in holiday and harvest celebrations

Usage: Edible fruit for fresh eating, jams, jellies, and baking; ornamental spring blooms for landscape decoration