Alphabetical Plant Listing

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

Japanese Maple 'Twombly's Red Sentinel', Acer palmatum 'Red Sentinel', Acer palmatum 'Twombley Scarlet Sentinel', Acer palmatum 'Twombly's Red Sentinnial', Twombley Scarlet Sentinel Japanese Maple, Twombly Japanese Maple


Perfect for small gardens, Acer palmatum 'Twombly's Red Sentinel' (Japanese Maple) is a dense, upright, columnar shrub or small tree with a changing foliage, season after season. Emerging bright red in spring, the delicate foliage of palmate, 5-7 slender tipped lobed leaves gradually changes to purple-red or reddish green as the season progresses, before turning brilliant red with orange hues in the fall. The unique narrow shape of this Japanese Maple selection makes it prefect in situations where space is limited.

  • Grows up to 10-15 ft. tall (300-450 cm) and 7-8 ft. wide (210-240 cm).
  • A full sun or part shade lover, this plant is easily grown in moist, organically rich, slightly acidic, well-drained soils. Mulch helps retain soil moisture and keep roots cool. Best leaf color in partial shade, although full sun can be tolerated. Leaf scorch can be caused by lack of soil moisture or excessive exposure.
  • Perfect as specimen plant in cottage gardens, city gardens or for containers.
  • Low maintenance, this plant needs little pruning. If pruning is necessary, prune during the dormant season and avoid pruning in spring when the sap is running. Fertilize in spring before the leaves emerge.
  • May be affected by horse chestnut scale, aphids, verticillium wilt.
  • Propagate by grafting, softwood cuttings or layering.

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Requirements

Hardiness 5 – 9
Heat Zones 2 – 8
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A3
Plant Type Shrubs, Trees
Plant Family Acer - Maples
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 10' – 15' (3m – 4.5m)
Spread 7' – 8' (210cm – 240cm)
Spacing 84" – 96" (210cm – 240cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Tolerance Rabbit
Garden Uses Beds and Borders, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Informal and Cottage, Japanese Garden, Traditional Garden

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Dan Keck, Flickr

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 9
Heat Zones 2 – 8
Climate Zones 2, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A3
Plant Type Shrubs, Trees
Plant Family Acer - Maples
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 10' – 15' (3m – 4.5m)
Spread 7' – 8' (210cm – 240cm)
Spacing 84" – 96" (210cm – 240cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Tolerance Rabbit
Garden Uses Beds and Borders, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Informal and Cottage, Japanese Garden, Traditional Garden

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