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Commonly known as Japanese maple
SPECIMEN SIZED VARIETIES OF ACER PALMATUM ARE IN 7.5 OR 10 LITRE POTS AND ARE ALL APPROXIMATELY 4-6 FEET IN HEIGHT.
SPECIMEN SIZED VARIETIES OF ACER PALMATUM DISSECTUM ARE SMALLER GROWING AND THEREFORE CONSIDERABLY SMALLER IN SIZE ALTHOUGH OF A SIMILAR AGE.
Genus of 120 species of evergreen and deciduous trees and shrubs, from woodlands mainly, in Europe, northern Africa, Asia and North and Central America.
Some form large trees and others are understorey plants. The most popular decorative forms are from the palmatum group, Japanese maples which have been cultivated in Japan for centuries and is a well-known temple tree and bonsai subject . They have appeared in art forms for centuries.
Palmatum (hand-like) was the name given by Swedish doctor-botanist Carl Peter Thunberg late in the 18th century, following the ancient Japanese where they were likened to hands of frogs or hands of babies.
The UK representative is the field maple, A. campestre, a medium-sized tree favouring chalk soils but widely planted. It is a wildlife plant attractive to aphids which are preyed on by ladybirds, hoverflies and birds. Caterpillars eat the leaves and the nectar and pollen in the flowers attract insects as well.
The wood has the highest density of all the European maples and is used for veneers and harps.
Deciduous5-lobed leaves, 5-8cm (2-3in) long
TreeUpright habit. Inconspicuous flowers in spring. Winged fruits in autumn
Hardy - cold winterHardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
Partial shadeShelter from cold winds and late frosts
Additional FeaturesGood to knowMaximum size in about 20 yearsPests & DiseasesAphids, mites, scale insects, caterpillars, Verticillium wilt, leaf scorch, honey fungus.Place of originChina, Korea, Japan.
Garden Location/ConditionsPatio / pot plantsSuitable for small gardens
Leaf Colour (if not green)Gold variegated
(see photos above)
Pruning groupPruning group 1Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
RHS group 1Late autumn to midwinter
Soil ConditionsFertile moist well-drained soil
- Garden Cultivation
- Pests & Diseases
- Further Reading
- Scorching & Dieback - Video Tip ondemand_video
- Allergic reactions and pollen
- Plants which produce masses of pollen - to avoid
- Plants producing little pollen - relatively safe!
- How to plant/move a shrub
- How to plant/move a shrub - Video Tip ondemand_video
- Fertisiling shrubs - Video Tip ondemand_video
- Mulching - Video Tip ondemand_video
- Pruning a shrub - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Taking semi-ripe cuttings -Video Tip ondemand_video
- Self-sown seedlings - Video Tip ondemand_video
- Trimming a shrub - Video Tip ondemand_video
- Weed spraying - Video Tip ondemand_video
- When is the right time to collect seeds?
- When are seeds actually ripe and ready for collection?
- Magnolia seed collection - Video Tip ondemand_video
- Cornus capitata seed collection - Video Tip ondemand_video
- Lithocarpus Seed Collection - Video Tip ondemand_video
- Camellia seed collection - Video Tip ondemand_video
- Rhododendron seed collecting - Video Tip ondemand_video
- Storing seeds over winter
- Embothrium Collecting and Storing Seeds
- Decaisnea Seed Collection & Potting
- How to plant a tree - Video Tip ondemand_video
- How to plant a tree
- Ties - Video Tip ondemand_video
- Restaking fallen young trees - Video Tip ondemand_video
- Fallen old tree - Video Tip ondemand_video
- Clearing up fallen beech tree - Video Tip ondemand_video
- Spring pruning - Video Tip ondemand_video
- Removing side shoots - Video Tip ondemand_video
- Pruning and Shaping Magnolia - Video Tip ondemand_video
- Deer protection - Video Tip ondemand_video
- Weed Spraying - Video Tip ondemand_video
- Removing Ivy - Video Tip ondemand_video
- Removing wire protection - Video Tip ondemand_video
- Tree Survey - Video Tip ondemand_video
- Crown uplift - Video Tip ondemand_video
- Removing shoots below graft - Video Tip ondemand_video
- Removing peeling bark - Video Tip ondemand_video
- Maintaining variegation - Video Tip ondemand_video
Buy Varieties of ACER
light green, ragged foliage turning crimson in autumn
arching habit with finely divided green leaves
yellow-green leaves in spring, deep green in summer and gold in autumn. Brightly coloured bark. Tolerant of sun
red-tinted green leaves turning scarlet in autumn
red stems, golden young foliage
a 2018 RHS Plant of the Year finalist. The leaf colour starts a pale yellowish-green, then develops white edging to the leaf in late spring., the leaves turn reddish in parts of the plant in the summer and the autumn colour is a golden-yellow. A true metamorphosis in a season
purple-red foliage in spring which develops greenish tones and turns red-scarlet in autumn
orange-green foliage in spring turning gold-crimson in autumn. Pendulous habit
yellow-golden leaves unfold in spring becoming greenish in summer and orange-yellow as autumn nears
slightly bronze foliage, scarlet autumn colour
pink-tinted foliage in spring turning red, orange and yellow in autumn
red foliage in spring and summer turning crimson-red in autumn. Upright habit
a slow growing dwarf form with reddish-purple leaves
green foliage is variegated irregularly with white and rose-pink on the edges especially on the new growth
('Senkaki') - young branches coral-red. Good yellow autumn colour
green leaves with 7 long linear segments which are thin and narrow. A very dainty appearance and a soft yellow colouration in autumn. One of the best forms of A.palmatum in the garden at Burncoose
upright growing compact and dense variety with bright red new foliage which matures to deep maroon red
bright green stem. Fresh green leaves turning gold in autumn
brilliant glittering scarlet spring foliage becoming shrimp pink and bronzy-green then orange in autumn
pink-margined pinkish-green leaves turning scarlet in autumn
foliage maroon to red in spring turning bright red in autumn. Dense upright habit
red new growth turning bronze-green
golden yellow leaves in summer. Shows good resistance to heat and sun
purplish-red young leaves, later green with red autumn colour
intense orange new growth turning orange-green and yellow in autumn
outstanding variegated foliage of light green freckled and blended with pink and white giving subtle pastel toning
young stems striped white and pale green, leaves yellow in autumn
a very attractive slow growing form with pale yellow summer shoots turning red in winter
leaves turn clear yellow in autumn
purple Norway maple, wind tolerant