Percy Wiseman Yakushima Rhododendron (Rhododendron yakushimanum 'Percy Wiseman')

Percy Wiseman Yakushima Rhododendron

Rhododendron yakushimanum 'Percy Wiseman'

Lush compact blooms soften spring landscapes. Dwarf evergreen flowering shrub; common name: Percy Wiseman Rhododendron.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Partial sun to dappled shade; avoid intense midday summer sun to prevent leaf scorch
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Watering Keep soil consistently moist but not waterlogged; use acidic water to maintain soil pH
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Temperature Hardy to -10°C; protect from extreme heat above 28°C to avoid stress
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Characteristics

  • Leaf: Thick, leathery evergreen foliage with dark green upper surfaces and silvery-white undersides
  • Flower: Clustered trusses of pale pink buds opening to ruffled, funnel-shaped white blooms
  • Stem: Woody, branching stems forming a tight, rounded mound
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Care Guide

Watering

Maintain even soil moisture; apply mulch to retain hydration

Fertilization

Apply acidic, slow-release fertilizer once monthly. Use fertilizer formulated for acid-loving plants to maintain soil pH

Composted coffee grounds tea:Use fully composted grounds; dilute 1:20 with water and apply to root zone to preserve soil acidity
Pruning
  • Deadhead spent blooms after flowering to promote next season's growth
  • Thin overcrowded inner branches to improve airflow and reduce fungal risk
  • Trim to maintain compact mounding shape immediately after flowering
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may lead to vomiting, diarrhea, weakness, and cardiac irregularities

Humans: Contains grayanotoxins; ingestion causes oral irritation, nausea, and dizziness

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden shrub; container plant for patios or balconies