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Maple Forums on the UBC web-site

Dieback and related issues concerning JM witch's brooms

UBC Maple Forum - Fri, 28/04/2017 - 13:18
witches brooms do experience die back and sudden death.
I don't think anyone knows why - perhaps it's their undersized root ball/mass.
I have a large Shaina that like mapledia alawys looked great in full sun but this year has noticeable die back.
I hope it does not suddenly die.
I am sorry for your loss, mapledia.

Need help to identify. Need names

UBC Maple Forum - Sat, 22/04/2017 - 09:51
Need help.please

"Y" Trunk

UBC Maple Forum - Wed, 19/04/2017 - 17:58
I have had this healthy, now 7 foot Acer shirasawanum "Aureum" in our garden for the past 4.5 years.

As it is now lots bigger than it was when I first got it I muse more about the "Y" trunk.

Is there something I can or should do now to reduce the chance of it splitting when it is older and so larger?

Red Japanese Maples in Tropical Countries???

UBC Maple Forum - Fri, 14/04/2017 - 13:20
Anyone has any experience planting Japanese Red Maples in tropical countries? I live in Malaysia where it is hot & sunny the whole year. We get a good amount of rain too.

I have previously bought a japanese red maple tree. It was around 5' high and red / burgundy at the time of purchase. Soon after planting it, it turned green. I do not know what the species was nor do i think the workers at the nursery. They only sell things at hefty prices but know nothing about them.

I went...

Red Japanese Maples in Tropical Countries???

Straightening trunk and branches of a maple

UBC Maple Forum - Wed, 12/04/2017 - 23:58
View attachment 148041 I have a Acer palmatum 'Hogyoku' that's become misshaped from this winter's ice. The trunk and branches have been persuaded to all lean in one direction (see the photo). I'd like to persuade into a more balanced shape. I've done this before (with a dogwood) but not to the extent I wish to reshape this maple. I'd muchly appreciate some advice. How aggressively can I truss the branches? Should I do it incrementally - e.g. 10 degrees per week or per month? How far up the...

Straightening trunk and branches of a maple

An Introduction & A Question

UBC Maple Forum - Tue, 11/04/2017 - 00:19
Hello UBC Community & Maple Lovers!

A good friend and I are in the process of setting up our JM seed germination, seedling growth, and grafting hobby center at my house. We have a dozen 1-2 year old Acer Palmatum green rootstock plants that will be ready to graft soon (now I'm learning that February is the best month for us to graft in Central CA...oops). We have 5-8 dozen sprouted seedlings, and a growing collection of parent trees from which to harvest scion wood.

Here's a question...

An Introduction & A Question

2017 Maple Symposium and Tour Open for Registration

UBC Maple Forum - Tue, 04/04/2017 - 20:56
Hi all,

It's my pleasure to announce to the forum that registration for the 2017 Maple Symposium and Tour, taking place in Brittany and Normandy, France, is now open. The symposium begins on October 25th in Roscoff.

I'd like to stress that attendance is open to everyone, not restricted to members of the Society. All maple enthusiasts are welcome!

Full details of speakers, schedule, and visits can be found at this address:


2017 Maple Symposium and Tour Open for Registration

Fun seedlings

UBC Maple Forum - Tue, 04/04/2017 - 16:27
So who's got any interesting seedlings to look at?

Here are a few of mine.

The first 4 are of a dwarf form that stays a great chocolate brown for weeks, with tightly rolled leaves, before turning a dark almost bluish green. This one is 5 years old but somehow I've not gotten pictures of it before. The parent is 'Green Star'.

Next is a seedling from 'Villa Tarranto' that has not made the usual strap leaf, instead looking almost dissected.

A seedling of 'Heiwa' has red and green...

Fun seedlings

Tips on ID those 'lost tag' maples

UBC Maple Forum - Tue, 04/04/2017 - 15:01
Morning, I have a few JMs either I lost their name tags or the tag is faded out so I now have a hard times to ID them. Can you share with me any method on how to get their cultivar name back?. I guess we can start from the leaf type then go to color and group maybe?. Any insight is greatly appreciated.
Thanks, steven

First ones to leaf out

UBC Maple Forum - Mon, 13/03/2017 - 21:58
And the winner is...

Acer tegmentosum:

View attachment 146850

Acer buergerianum is well on its way too, and among Acer palmatum, 'Little Princess' ('Mapi-no-Machi-Hime') is on the lead.

PS: We've had a few days of rather warm weather here after some strong winds ans pouring rain : it was 8°C-18°C on Saturday, and only slightly lower on Sunday and today. I heard about the snow in Eastern USA: crazy weather...

No stem or branch growth every year

UBC Maple Forum - Wed, 08/03/2017 - 02:14
Hello, I am wondering if someone can help me figure out why many of my maples (in containers) do not seem to be growing. Every year, the plants will put out leafage, some years better than others, but there is hardly any growth, or branching at all. I've attached a picture which demonstrates this. You can see some good stem and branch growth from years prior, but then in the past 3 or 4 years, not much has happened. What I end up with is very short, stubby shoots from each year's...

No stem or branch growth every year

Various Acers from seed

UBC Maple Forum - Mon, 06/03/2017 - 22:39
Hi everyone. I rarely post, but am almost always lurking around reading all the great stuff on this forum.

I'm a relatively new Acer addict, only for a little over a year has my addiction been present ;).

I've grown a few palmatum from seed, but I was hoping those of you who have lots of experience growing Acer's from seed would detail your usual methods. I enjoy reading all the different techniques and using tidbits from each one to develop a method that best suits me. Thanks in...

Various Acers from seed

Japanese maple

UBC Maple Forum - Mon, 06/03/2017 - 18:16
I am collecting Japanese maple .Does anyone know where I can find a nursery(local anywhere in lower mainland) to buy rare Japanese maple

East Coast

UBC Maple Forum - Tue, 21/02/2017 - 18:46
Thinking about our East Coast members and hoping they are OK after this horrific storm. Sound off when you can and let us know how you are! In our thoughts and prayers...

Request made

UBC Maple Forum - Sat, 11/02/2017 - 12:00
I am a new member of the maple society, please add me. Thanks

Likelihood of hybridization

UBC Maple Forum - Fri, 03/02/2017 - 00:40
Hi everyone, hope all are well.

I am very interested in learning about Acer genetics and which species can hybridize with each other. I know very little at this point, but there is some great threads on here with discussions pertaining to this subject, as many of you seem to have great knowledge on the matter. So I have a question: What are the chances that one of the Macrantha section maples would hybridize with the native Acer pensylvanicum, which are very prevalent in my neck of the...

Likelihood of hybridization

2017 Maple Symposium Itinerary

UBC Maple Forum - Mon, 30/01/2017 - 11:41
The itinerary for the 2017 Maple Symposium and post-symposium tour has been posted on the Maple Society web site:

International Maple Symposium 2017 in Roscoff, Brittany, France - 25/26 October | The Maple Society

Hope we will see many forum members here in October!


Acer rubrum 'Brandywine'

UBC Maple Forum - Sun, 29/01/2017 - 05:28
I'm searching for an Acer rubrum 'Brandywine' available in a small size such as a 1 gallon or a liner. I've only found wholesale only sellers and large expensive trees at far away retailers. I'm located in Atlanta Georgia USA. I'd be willing to purchase it as some scion wood, during March, as well if it were available. Also interested in Acer rubrum 'Somerset'. Thank you.

Seedling question - Is this an acer palmatum?

UBC Maple Forum - Thu, 26/01/2017 - 09:15
Hi all,
I have this 2 year old seedling, it was from a pack of seeds i bought on ebay named as Acer Palmatum.

However this seedling is notably different to almost every other acer palmatum seedling i have grown.

See for yourself. The one in question is on the right.

I am unsure it is acer palmatum! Perhaps some other acer variety? On the left, is a normal acer palmatum seedling to see the contrast. My different one seems so smooth on the edges and colour is a very dark rich green. Though...

Seedling question - Is this an acer palmatum?

When to transplant

UBC Maple Forum - Thu, 26/01/2017 - 04:55
Greetings from Appalachia, where it's basically been spring for the past two weeks, but will return to winter tomorrow (that's okay with me, I'm a snow lover).

I have a small, less than a meter tall, A.p. 'Shirazz', (I know there's been lots of controversy on the name, but that's what it was labeled as), that is in an area where a lot of water flows when it rains very hard. So much water, that a small area of the roots are totally submerged for a brief time, as the soil is quick to drain...

When to transplant


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