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Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet')

Beginner
skill rating
1 hour care
per year
1.5m
Max height
2.5m
Max spread
10-20 years
To maturity

Plant details

Botanical name

Acer palmatum var. dissectum 'Garnet'

Other names

Acer palmatum 'Garnet', Japanese maple 'Garnet'

Genus

Acer Acer

Variety or Cultivar

'Garnet' _ 'Garnet' is a small, mound-forming shrub with arching stems bearing finely divided, reddish-purple leaves turning brighter in autumn. Clusters of purple flowers in spring are followed by red, winged fruit in summer.


Acer palmatum var. dissectum 'Garnet' is: Deciduous

Habit

Compact, Cushion or Mound Forming, Rounded

Awards

RHS AGM (Award of Garden Merit)

Flower

Purple in Spring

Foliage

Red, Purple in Spring; Reddish-purple in Summer; Reddish-purple in Autumn

How to care

Watch out for

Specific pests

Horse chestnut scale , Aphids Horse chestnut scale , Aphids

Verticillium wilt Verticillium wilt

General care

Propagation methods

Grafting, Softwood cuttings


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Where to grow

Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet') will reach a height of 1.5m and a spread of 2.5m after 10-20 years.

Suggested uses

Containers, Low Maintenance, City, Architectural, Rock, Foliage only

Cultivation

Grow in moist but well-drained, acid or neutral soil. Foliage colour is best in part shade, although full sun can be tolerated. Leaf scorch can be caused by dry soil or excessive exposure to frost, sun or wind when leaves are young.

Soil type

Clay, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

Botanical name

Acer palmatum var. dissectum 'Garnet'

Other names

Acer palmatum 'Garnet', Japanese maple 'Garnet'

Genus

Acer Acer

Variety or Cultivar

'Garnet' _ 'Garnet' is a small, mound-forming shrub with arching stems bearing finely divided, reddish-purple leaves turning brighter in autumn. Clusters of purple flowers in spring are followed by red, winged fruit in summer.

Foliage

Deciduous

Habit

Compact, Cushion or Mound Forming, Rounded

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Purple in Spring

Foliage

Red, Purple in Spring; Reddish-purple in Summer; Reddish-purple in Autumn


How to care

Watch out for

Specific pests

Horse chestnut scale , Aphids

Specific diseases

Verticillium wilt

General care

Propagation methods

Grafting, Softwood cuttings


Monthly care advice


Where to grow

Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet') will reach a height of 1.5m and a spread of 2.5m after 10-20 years.

Suggested uses

Containers, Low Maintenance, City, Architectural, Rock, Foliage only

Cultivation

Grow in moist but well-drained, acid or neutral soil. Foliage colour is best in part shade, although full sun can be tolerated. Leaf scorch can be caused by dry soil or excessive exposure to frost, sun or wind when leaves are young.

Soil type

Clay, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6

Defra's Risk register #1

Plant name

Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet')

Common pest name

Apple root knot nematode

Scientific pest name

Meloidogyne mali

Type

Nematode

Current status in UK

Unknown

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

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.

Defra's Risk register #2

Plant name

Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet')

Common pest name

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

Scientific pest name

Xylella fastidiosa subsp. multiplex

Type

Bacterium

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

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.

Defra's Risk register #3

Plant name

Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet')

Common pest name

Scientific pest name

Hylesia nigricans

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

South American moth which could be damaging to broadleaf species if introduced to the UK; as well as having human health impacts. The main pathway is likely to be goods (including non-plant material) imported from South America and awareness raising with the main industry sectors is recommended.

About this section

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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When it was at the back!

(27/07/2013)

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This plant likes... Garden match
Soil types: Clay, Loamy, Sandy Tell us...
Soil drainage: Well-drained, Moist but well-drained Tell us...
Soil pH: Acid, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Torrential rain acer now in standing water

we have planted our acer in an area which can vary from fairly dry to a mud bath. With the torrential rain over the last few days there are puddles of water around the plant.The soil is clay but we… read more

Acer 'Garnet'

We have had this acer for two years now. It just doesn't seem to grow. Don't understand why instructions say it will tolerate full sun as the leaves are very scorched. Our soil is neutral. read more

Unknown Pest/Disease

Can anyone help with my dying acer, I am having trouble identifying the problem.This spring only half the leaves appeared on the tree. Bark of the other half has come off. There does seem to be a… read more

Acer That's Not Ace!

We planted our Acer in June- watered it during the Summer months but very recently it has lost almost all of its leaves! Can anyone help with an explanation please?Many thanks read more

There are 0 active discussions about Acer palmatum var. dissectum 'Garnet' (Japanese maple 'Garnet')

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