Japanese Maple (Acer palmatum)

Japanese Maple

Acer palmatum

Its delicate, deeply lobed leaves catch the autumn light like stained glass. Deciduous ornamental tree.

Prefers partial sun to dappled shade; protect from harsh afternoon sun to prevent leaf scorch.
2/week
Moderate
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Plant Needs

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Sunlight Prefers partial sun to dappled shade; protect from harsh afternoon sun to prevent leaf scorch.
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Watering Requires consistently moist, well-drained soil; do not allow the soil to dry out completely.
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Temperature Hardy in temperate climates; protect from late spring frosts which can damage new foliage.
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Characteristics

  • Leaves: Opposite, deeply palmately lobed with 5 to 9 pointed lobes, margins serrated, turning vibrant red, orange, or yellow in autumn;
  • Flowers: Small, reddish-purple, borne in pendulous corymbs;
  • Fruit: Paired winged samaras, 2 to 3 cm long, ripening in late summer to autumn;
  • Bark: Smooth, greenish-gray to light brown, becoming slightly fissured with age.
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Care Guide

Watering

Water deeply once or twice a week, especially during dry spells.

Fertilization

Apply a balanced, slow-release organic fertilizer just as buds begin to swell.. Fertilize sparingly; maples do not require heavy feeding.

Coffee Ground Compost:Mix used coffee grounds into the topsoil or compost pile to provide gentle nitrogen and maintain the slight acidity maples prefer. Avoid applying thick layers directly against the trunk to prevent rot.
Pruning
  • Prune during late autumn or winter dormancy to prevent sap bleeding;
  • Remove dead, diseased, or crossing branches to maintain an open, airy canopy;
  • Avoid heavy pruning; focus on enhancing the tree's natural structural form.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Non-toxic per ASPCA.

Humans: No known toxicity; generally safe to handle.

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Garden Uses & Culture

Culture: In North American and European landscaping, maples are celebrated as the quintessential symbol of autumn, representing endurance and the breathtaking beauty of seasonal transition.

Usage: Widely used as a specimen tree in gardens, woodland landscaping, and as a popular subject for bonsai cultivation.