Twombly's Red Sentinel Japanese Maple

Twombly's Red Sentinel Japanese Maple (Acer palmatum 'Twombly's Red Sentinel')

Twombly's Red Sentinel Japanese Maple (Acer palmatum 'Twombly's Red Sentinel') is a narrow, upright red selection featuring deep burgundy foliage that holds its color through summer and turns brilliant crimson in fall; its columnar form makes it ideal for small gardens, entries, and vertical accents.

Distinctive Features

Rich, sunfast red leaves on a dense, upright framework provide strong structure and color consistency; excellent performance in both containers and landscapes.

Growing Conditions

• Sun Exposure: Full sun to partial shade; best color in full sun with protection from extreme heat.
• Soil: Moist, well drained, slightly acidic soil enriched with organic matter.
• Water: Moderate; maintain even moisture, especially during hot or dry periods.
• USDA Hardiness Zones: 5 to 8.
• Mature Size: Typically 10 to 15 ft tall and 4 to 6 ft wide.

Ideal Uses

• Focal Point: Narrow, upright shape and red foliage create bold vertical interest.
• Entry Accent: Frames doors and pathways with color and symmetry.
• Courtyard Specimen: Compact size suits patios and confined spaces.
• Mixed Border Contrast: Adds height among shrubs and perennials.
• Container Planting: Thrives in large pots for structured form and color.

Low Maintenance Care

• Watering: Water deeply and regularly during establishment; increase during heat.
• Pruning: Minimal; shape lightly in late winter to maintain form.
• Fertilizing: Apply balanced fertilizer in spring if needed for steady growth.
• Mulching: Keep a 2 to 3 in mulch layer over the root zone for temperature regulation.
• Notes: Protect from drying winds and excessive sun to preserve leaf color.

Why Choose Twombly's Red Sentinel Japanese Maple?

• Space Saving Habit: Columnar growth fits narrow garden sites.
• Rich Foliage Color: Deep red leaves hold all summer and brighten in fall.
• Vertical Interest: Adds architectural structure to gardens and courtyards.
• Adaptable Performance: Excellent in ground or container plantings.
• Low Maintenance: Strong grower with little pruning required.