Acer palmatum
Japanese maple
Acer Acer
A. palmatum - A. palmatum are small, deciduous trees with deeply-lobed mid-green leaves which turn red, orange and yellow in autumn.
Acer palmatum is: Deciduous
Small
Red in Spring
Mid-green in Summer; Yellow, Red, Orange in Autumn
Aphids Aphids
Verticillium wilt Verticillium wilt
Pruning group 1. Prune in late autumn to midwinter.
Grafting, Softwood cuttings
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Acer palmatum (Japanese maple) will reach a height of 4m and a spread of 4m after 10-20 years.
Containers, Low Maintenance, City, Architectural, Rock, Foliage only
Grow in a moist but well-drained or well-drained soil. The foliage colour is best in dappled shade, although full sun is tolerated. Tolerates some lime but colours better on acid to neutral soil. Dry conditions or excessive exposure can cause leaf scorch.
Loamy, Sandy
Well-drained, Moist but well-drained
Acid, Neutral
Partial Shade
South, East, West
Sheltered
Hardy (H4)
We do not currently have companion plants added for this plant.
Acer palmatum
Japanese maple
Acer Acer
A. palmatum - A. palmatum are small, deciduous trees with deeply-lobed mid-green leaves which turn red, orange and yellow in autumn.
Japan, Korea
Deciduous
Small
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Red in Spring
Mid-green in Summer; Yellow, Red, Orange in Autumn
Pruning group 1. Prune in late autumn to midwinter.
Grafting, Softwood cuttings
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Acer palmatum (Japanese maple) will reach a height of 4m and a spread of 4m after 10-20 years.
Containers, Low Maintenance, City, Architectural, Rock, Foliage only
Grow in a moist but well-drained or well-drained soil. The foliage colour is best in dappled shade, although full sun is tolerated. Tolerates some lime but colours better on acid to neutral soil. Dry conditions or excessive exposure can cause leaf scorch.
Loamy, Sandy
Well-drained, Moist but well-drained
Acid, Neutral
Partial Shade
South, East, West
Sheltered
Hardy (H4)
Zone 9, Zone 8, Zone 7, Zone 6
Acer palmatum (Japanese maple)
Apple root knot nematode
Meloidogyne mali
Nematode
Unknown
3
4
UK (along with certain other European countries) received potentially infested trees in 1992; but these were destroyed at the end of the trial period and targeted surveillance has failed to find any trace of the nematode. Main impacts are on elm; apple and mulberry and industry should source such material carefully.
Acer palmatum (Japanese maple)
Alfalfa dwarf; Anaheim disease; California vine disease; Dwarf disease of alfalfa; Dwarf disease of lucerne; Leaf scald of oleander; Leaf scald of plum; Leaf scorch; Phony disease of peach; Pierce's disease of grapevine; Variegated chlorosis of citrus
Xylella fastidiosa subsp. multiplex
Bacterium
Absent
3
4
A bacterial disease with a wide host range detected in Corsica. Although EU regulated; there remains some concern about the risk of introduction. This subspecies is known to be able to thrive in cooler climates. Should an outbreak occur; there would be a need for eradication action which would result in environmental and social impacts.
Acer palmatum (Japanese maple)
Japanese long scale; Japanese maple scale; Long scale; Japanese; Pear white scale
Lopholeucaspis japonica
Insect
Absent
2
4
Regulated only on Citrus at present; regulation on other hosts needs to be considered. Only likely to be a pest under glass in UK.
Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.
Traveling or importing plants? Please read "Don't risk it" advice here
Suspected outbreak? Click here for contact details to report to the relevant authority.
Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/
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This plant likes... | Garden match | |
Soil types: | Loamy, Sandy | Tell us... |
Soil drainage: | Well-drained, Moist but well-drained | Tell us... |
Soil pH: | Acid, Neutral | Tell us... |
Light: | Partial Shade | Tell us... |
Aspect: | South, East, West | Tell us... |
Exposure: | Sheltered | Tell us... |
Hardiness: | Hardy (H4) | Tell us... |
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