Sumi-Nagashi Japanese Maple

Sumi-Nagashi Japanese Maple (Acer palmatum 'Sumi-Nagashi')

Sumi-Nagashi Japanese Maple (Acer palmatum 'Sumi-Nagashi') is an upright, medium sized red selection with broad, deeply divided leaves that emerge crimson red, deepen to burgundy to purplish tones in summer, and finish fiery scarlet in fall; its open, vase shaped framework and bold foliage bring drama and structure to landscapes and mixed borders.

Distinctive Features

'Sumi-Nagashi' is valued for its strong spring color and consistent scarlet autumn display; large, seven lobed leaves with serrated edges provide rich texture on an elegant, arching canopy that reads balanced and architectural year round.

Growing Conditions

• Sun Exposure: Full sun to partial shade; provide afternoon protection in hot regions to prevent leaf scorch.
• Soil: Moist, well drained, slightly acidic soil rich in organic matter.
• Water: Maintain even moisture; avoid drought and soggy soil.
• USDA Hardiness Zones: 5 to 8.
• Mature Size: 15 to 20 ft tall, 12 to 15 ft wide, upright vase shaped habit.

Ideal Uses

• Focal Point: Deep red foliage and strong form create a commanding accent.
• Entry Gardens: Frames paths and patios with bold color and shade.
• Mixed Borders: Contrasts beautifully with conifers and green shrubs.
• Specimen Tree: Suits lawns, courtyards, or island plantings.
• Japanese Gardens: Complements stone, water, and gravel elements.

Low Maintenance Care

• Watering: Deep soak during dry periods to keep soil consistently moist.
• Pruning: Light structural pruning in late winter; avoid heavy midsummer cuts.
• Fertilizing: Apply a balanced, slow release fertilizer in early spring.
• Mulching: 2 to 3 inches over the root zone to retain moisture and moderate soil temperature; keep mulch off the trunk.
• Notes: Provide airflow and partial afternoon shade in hot sites; generally pest and disease resistant in well drained conditions.

Why Choose Sumi-Nagashi Japanese Maple?

• Vibrant Seasonal Color: Crimson spring, burgundy summer, and scarlet fall foliage.
• Architectural Form: Graceful, vase shaped canopy with open branching.
• Textural Interest: Large, serrated leaves provide bold contrast in borders.
• Proven Performer: Reliable color and growth across climates.
• Low Maintenance: Adaptable, easy care maple suited to a range of garden styles.

For the strongest color and growth, plant in full to filtered light, provide regular watering, and ensure well drained soil.