Kanzan Cherry (Prunus serrulata 'Kanzan')

Kanzan Cherry

Prunus serrulata 'Kanzan'

Its double pink blooms cascade like soft clouds, a spring icon of delicate beauty. Deciduous ornamental tree; common name: Japanese Flowering Cherry.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; full sun exposure promotes the heaviest spring blooming
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Watering Water deeply when the top 5–7 cm of soil dries out; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; thrives in temperate climates, avoid prolonged heat above 32°C
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Characteristics

  • Leaf: Ovate with serrated margins, bronze when young, glossy green in summer, turning red-orange in autumn
  • Flower: Double pink blooms, 5–6 cm diameter, clustered in groups of 3–5
  • Stem/Bark: Smooth reddish-brown bark with distinct horizontal lenticels
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Care Guide

Watering

Maintain consistent soil moisture during blooming and active growth

Fertilization

Apply balanced slow-release fertilizer in early spring before budding. Use low-nitrogen fertilizer to prioritize flower production over foliage growth

Eggshell powder top-dressing:Crush fully dried eggshells into fine powder; dust lightly around the tree base in early spring and late autumn to boost soil calcium levels
Pruning
  • Prune immediately after blooming to remove dead wood and shape the canopy
  • Thin crowded inner branches to improve airflow and light penetration
  • Remove suckers from the tree base to maintain a clean, single-trunk form
  • Avoid heavy pruning in late summer to prevent frost damage to new, tender growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains cyanogenic glycosides that may cause systemic distress if ingested

Humans: Seeds contain cyanogenic glycosides; ingestion of chewed seeds causes mild gastrointestinal upset

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Garden Uses & Culture

Culture: Symbolizes spring renewal and transience in Japanese hanami (flower viewing) traditions

Usage: Ornamental shade tree for gardens, parks, and street landscaping