Santa Rosa Plum (Prunus salicina 'Santa Rosa')

Santa Rosa Plum

Prunus salicina 'Santa Rosa'

Juicy, blushed plums carry summer sweetness in sunlit orchards. Deciduous fruiting tree; common name: Santa Rosa 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 fruiting yield
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Watering Water deeply once weekly during dry growing periods; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; requires 800–1000 chill hours for successful fruit set; protect young blossoms from late spring frost
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Characteristics

  • Leaf: Oval to lanceolate glossy green foliage with serrated margins, turning pale yellow in autumn
  • Flower: Fragrant white five-petaled blossoms, clustered in groups of 2–3 on bare branches
  • Fruit: Round to heart-shaped deep red-purple plums with sweet-tart yellow flesh
  • Stem: Smooth light brown bark on young branches, becoming fissured and gray with age
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Care Guide

Watering

Maintain consistent soil moisture during fruit development; water deeply every 7–10 days

Fertilization

Apply balanced fruit tree fertilizer in early spring before bud break. Avoid high-nitrogen fertilizers, which prioritize leaf growth over fruiting

Composted banana peel tea:Fully compost banana peels, steep in water for 24 hours, dilute at a 1:20 ratio, and apply as a root drench to avoid odor and pest issues
Pruning
  • Prune in late winter to remove dead, diseased, or crossing branches and improve air circulation
  • Thin overcrowded fruiting spurs to increase fruit size and reduce branch breakage
  • Shape the canopy to maintain an open structure for even sunlight penetration
  • Remove suckers from the base to direct energy to the main tree and fruiting branches
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion of leaves, stems, or seeds can cause cyanide poisoning

Humans: Fruit flesh is safe for consumption; seeds, leaves, and stems contain cyanogenic glycosides, which are toxic if ingested in large quantities

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Garden Uses & Culture

Culture: Symbolizes summer abundance and home orchard self-sufficiency in temperate regions

Usage: Edible fruit for fresh eating, jams, and baking; ornamental spring blossom display