Rhode Island Red Japanese Maple (Acer palmatum 'Rhode Island Red')

Rhode Island Red Japanese Maple

Acer palmatum 'Rhode Island Red'

Its crimson foliage blazes like autumn fire year-round. Compact deciduous ornamental tree; common name: Rhode Island Red Japanese Maple.

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 direct sun to prevent leaf scorch and preserve foliage color
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Watering Water deeply when the top 5–7 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Hardy to -15°C; protect from extreme summer heat above 30°C to avoid foliage fading
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Characteristics

  • Leaf: Palmate, 5-lobed, deep crimson red throughout growing season, turning brighter scarlet in autumn
  • Flower: Small, reddish-purple, clustered in umbels; inconspicuous
  • Stem: Slender, reddish-brown young branches, maturing to gray-brown
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; mulch to retain moisture

Fertilization

Apply diluted balanced organic fertilizer once in early spring. Avoid high-nitrogen fertilizers to prevent green foliage discoloration

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base, gently work into topsoil; avoid direct contact with stems to prevent irritation
Pruning
  • Prune dead or damaged branches in late winter before new growth emerges
  • Thin crowded inner branches to improve airflow and light penetration
  • Shape lightly to maintain compact rounded habit; avoid heavy pruning that removes mature red foliage
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no adverse effects from ingestion

Humans: No toxic effects reported from ingestion or skin contact

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Garden Uses & Culture

Culture: Symbolizes elegance and seasonal vibrancy in Japanese garden design

Usage: Ornamental focal tree for small gardens, patio containers, or landscape borders