Acer palmatum 'Sango-kaku' (Coral bark maple)

Other names: Acer 'Sengo Kaku', Acer sangokaku, Acer palmatum 'Senkaki'

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Variety or Cultivar

'Sango-kaku' has palm shaped orange-yellow leaves in spring, turning rich green in summer, turing yellow again in autumn. It has distinctive coral-red shoots and bark for all year interest.

Season of interest

Flower
	Spring	Summer	Autumn	Winter
Flower
Foliage
	Spring	Summer	Autumn	Winter
Foliage

Height and spread

Metric |
Imperial

Height and spread Metric \| Imperial
Size	Max height	Max spread	To maturity
6 m	5 m	10-20 years
19 ft	16 ft	10-20 years

Height and spread

Metric |
Imperial

Size

Max height

Max spread

To maturity

6 m

5 m

10-20 years

19 ft

16 ft

10-20 years

Where to grow

Soil

Soil type

Chalky
Clay
Loamy
Sandy

Soil drainage

Moist but well-drained
Well-drained

Soil pH

Acid
Neutral

Conditions

Sunlight

Partial Shade
Full Sun

Aspect

East
West
South

Exposure

Sheltered

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Additional plant details

Cultivation

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

Suggested uses

Containers/Patio, Rock, Architectural, Cottage/Informal, City, Low Maintenance, Woodland, Foliage only

UK hardiness

USDA zones

Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Rounded, Compact

Drought tolerant

Flood tolerant

Yes

Toxicity

Not toxic

Plant care

Pruning and propagation

Pruning

Pruning group 1.

Propagation methods

Softwood cuttings, Grafting

Pests and diseases

Other plants

Plants in this Genus (298)

Acer

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Acer palmatum (any variety) Japanese maple (any variety)

Acer palmatum var. dissectum 'Chantilly Lace' Japanese maple 'Chantilly Lace'

Acer palmatum 'Aratama' Japanese maple 'Aratama'

Acer palmatum 'Beni-maiko' Japanese maple 'Beni-maiko'

Acer rufinerve 'Winter Gold' Snake-bark maple 'Winter Gold'

Acer palmatum 'Atropurpureum' Purple Japanese maple

Acer palmatum 'Ariadne' Japanese maple 'Ariadne'

Acer palmatum 'Nathan' Japanese maple 'Nathan'

Acer pseudosieboldianum Korean maple

Acer caudatum subsp. ukurunduense Manchurian maple

Acer calcaratum Chinese maple

Acer mandschuricum Manchurian maple

Acer monspessulanum Montpelier maple

Acer platanoides 'Globosum' Norway maple 'Globosum'

Acer palmatum 'Chiyo-hime' Japanese maple 'Chiyo-hime'

Acer palmatum 'Eddisbury' Coral bark maple 'Eddisbury'

Acer palmatum 'Dissectum' Japanese maple 'Dissectum'

Acer palmatum 'Marlo' Japanese maple 'Marlo'

Acer shirasawanum 'Gloria' Fullmoon maple 'Gloria'

Acer platanoides 'Emerald Queen' Norway maple 'Emerald Queen'

Acer palmatum var. dissectum 'Emerald Lace' Cut-leaved Japanese maple 'Emerald Lace'

Acer palmatum var. dissectum 'Green Globe' Cut-leaved Japanese maple 'Green Globe'

Acer palmatum 'Shirazz' Japanese maple 'Shirazz'

Acer palmatum var. dissectum 'Orangeola' Cut-leaved Japanese maple 'Orangeola'

Acer rufinerve Snake-bark maple

Companion plants (0)

Related content

Discuss this plant

Re: Acer problem

Sybil

3533 0

I have my acer in a pot. I planted last year. It came through the winter OK. I moved it to what I thought was a sheltered position in spring, since when it has gone downhill. I have now moved it to a corner where it is surrounded by other pots it case it is a problem with wind - we have a very cold and windy spring. I would like to know if I should prune down the old stems and should I give the pot a feed and if so, what.

Posted: Wednesday 16th of May 2012 02:41 PM

Re: Acer problem

Shoot User

3533 0

Karren,

I'm having the exact same problem as you, almost one year later. (I'm in the U.S.) I planted my tree in April, and in May the leaves wilted and bark became black. My arborist wants to replant another since I have a guarantee from the nursery. However, I'm worried it might die too if I don't know what's causing this.

Posted: Friday 3rd of June 2011 06:54 PM

Re: Re: Re: Acer problem

Shoot User

3533 0

Hi Karren,

I would say for now just try pruning off the affected areas where possible, keep regularly watered (not too much but just evenly moist), give it a liquid feed, perhaps mulch with some well rotted organic matter, and see if there is any improvement.

If it persists or gets worse it may be worth sending a sample to the RHS pest and disease identification service (for members) to get an expert opinion. Alternatively you could try showing cuttings and/or photos to wherever you purchased the tree, and seeing if they can offer any suggestions.

Hope this helps!
Katy

Posted: Friday 11th of June 2010 10:34 AM

Re: Re: Acer problem

Shoot User

3533 1

Hi Katy,

Thanks so much for your reply. It is planted in a very sheltered position -it is in a small garden sheltered by our house, fences and several taller trees in neighbouring properties. All the other trees and plants nearby seem to be thriving.

We did wonder if perhaps we hadn't planted in properly and some sort of root damage could be the cause of the problem? I have tried to inspect the roots. They seem to be quite fine on the surface, but other than that OK - but I don't really know what I am looking for when it comes to roots!

We also did wonder about wilt and have had a look at some sections, but no sign of any markings within the tissue - just on the outside of the branches.

Is there anything we could be doing to nurse it back to good health?

Thanks for your advice,
Karren

Posted: Thursday 10th of June 2010 02:47 PM

Re: Acer problem

Shoot User

3533 1

Hi Karren,

It’s quite normal for acers to experience some dieback, particularly this variety, however this does look fairly extreme. Could it be something to do with where the tree is sited? Acers like to be sheltered and protected from the elements – is yours sheltered at all? It could be down to stress and damage caused from being exposed to strong winds.

Another possibility, which I hope isn’t the case, is the dreaded verticillium wilt [LINK]https://https://www.shootgardening.com/plant/disease/verticillium-wilt[/LINK]. Acers are particularly prone to this. A quick way of checking whether this is the culprit is by pruning off one of the affected branches. If there is black marking within the tissue then this may be the case.

Let us know if either of these possibilities sound familiar.
Regards
Katy

Posted: Thursday 10th of June 2010 02:12 PM

Acer problem

Shoot User

3533 3

I planted an acer sango kaku at the begining of April. Initially it did well, but in the last month has started developing problems. I first noticed that the leaves on some of the branches were turning brown and dying. When I inspected the tree there were black marks on the bark like it had been scorched. These are flat marks, and don't appear to be a fungus. After a few days these marks turn lighter brown, as can be seen in the pictures. All the brances that arise out of this dark area appear to die. I did wonder about water logging, but that doesn't appear to be a problem. We also had a problem with some tiny red spider insects which I have sprayed with provado. Any suggestions as to what the problem is and any solutions would be greatly appreciated. I don't want to lose the tree!

Posted: Monday 7th of June 2010 12:06 PM Last reply: Monday 7th of April 2025 06:24 AM