Acer palmatum 'Dissectum Rubrum' (Red Cutleaf Japanese Maple)


Michael's Opinion

Acer palmatum var.dissectum 'Rubrum's' compact, mounding shape make it an ideal tree for a small garden. It is great as an accent tree planted in a sheltered area. It is quite hardy and not as fragile as it may seem based on its delicate foliage. I find this cultivar to be quite interesting and artistic with its delicate foliage, contorted branching habit and its alluring year round coloured foliage, a reddish green foliage, transforming into a vibrant orange in the autumn.

Botanical Information

FamilySapindaceae (Aceraceae)
GenusAcer
Speciespalmatum
Cultivar'Dissectum Rubrum'
CategoryWoody
TypeTree (deciduous)
ReferencesToomer, S. (2005). Trees for the small garden: How to choose, plant, and care for the tree that makes the garden special (pp. 28-30). Portland, Or.: Timber Press. Dirr, M. (1997). Dirr's hardy trees an illustrated encyclopedia (p. 21, 450). Portland, OR: Timber Press.
OriginIntroduced in Great Britain in 1875.

Details

USDA Hardiness Zone5
USDA Hardiness Ref.
Canadian Hardiness Zone4 - 6a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-29 - (-23)
Temperature (°F)-20 - (-10)
Height3 m
Spread3 m
GrowthSlow
Flowering PeriodJune

Description and Growing Information

General DescriptionA specimen that is small, yet hardy slow growing tree. It forms a mushroom to dome-like shape with finely cut foliage.
ID CharacteristicFiligree like foliage, vibrant autumn colour and attractive contorted and twisted branches, are the main defining characteristics of this cultivar. They also have lovely tiny reddish-purple flowers when in bloom.
ShapeThis cultivar has a neat and compact mounding form with ascending branches.
LandscapeOften used in small gardens as a focal point. They can also can be grown in a large container, and are great for bonsai. Ideal for patio, low maintenance and woodland gardens. They are also a choice specimen to plant near a pool, so that the artistic form of the branches may reflect in the water. It is best planted in a sheltered location.
PropagationThis tree should be propagated by grafting. Since their delicate twigs grow down rather than upward, they are grafted onto a standard. The height of the standard understock it is grafted to determines the ultimate height of the tree.
CultivationIt can tolerate full sun or partial shade, although it seems to thrive in dappled shade. Well drained, fertile soil that has a neutral to acidic level is recommended for this cultivar. It requires some shelter from strong winds, as this can scorch the leaves.
PestsAphids and horse chestnut scale are the main pests that can affect this cultivar. It is also susceptible to verticillium wilt. Their delicate leaves may also be damaged by a late frost in the early spring or wind and sunburn if planted in exposed locations.
Notable SpecimensThe A. M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatHorticultural origin.
Bark/Stem DescriptionSmooth grey bark. It has a very attractive branching form that creates winter interest.
Flower/Leaf Bud DescriptionThe opposite buds are cone-like shaped and chestnut in colour.
Leaf DescriptionPalmate leaf, delicate, lace-like, deeply cut, 5 - 9 lobes.
Flower DescriptionSmall, yet attractive red-purple coloured flowers.
Fruit DescriptionA feathered, vigorously veined, two winged smara develops after the plant flowers in June.
Colour DescriptionBeautiful colour in spring, summer and autumn. Transforming from a reddish-green in the spring and summer to a vibrant orange in the autumn.
Texture DescriptionFine textured.

Photographs