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Maple Forums on the UBC web-site


UBC Maple Forum - Sun, 18/02/2018 - 00:51
I checked the nearly 50 bags of seeds, most of them from the Maple Society seeds exchange, I have in the fridge, and two batches are starting to germinate: I spotted a long white root in the bag of Acer morifolium, and several in the bag of Acer rubescens.

Acer morifolium:

View attachment 155379

The period of dormancy varies from one species to another, these ones don't seem to need a lot of time since I put them in the mix of sand and peat on January 7th. Others, like A. shirasawanum...



UBC Maple Forum - Sat, 17/02/2018 - 19:26
I've tried different periods for cuttings, differnt sizes and species.

It seems that for most maples species, summer cuttings are the most successful. Acer palmatum, the plain species and some cultivars, are easy. Acer buergerianum is probably the best for this type of propagation.

Maple Society members will read again the article Maurice Foster published in the Spring 2017 news letter (pp. 23-26).

As usual, I tried some last summer, but very late: mid-August as far as I can remember, but...


Several leaves are wilted on my Acer pseudoplatanus 'Esk Sunset'

UBC Maple Forum - Thu, 15/02/2018 - 23:29
Hey guys, My Eskimo Sunset Japanese Maple has been in the ground for 3 years and has been doing well. The tree gets full sun from the morning until about 1:30 in the afternoon and then it gets dappled light. This spring I recently noticed that several leaves have wilted. I can't recall if the tree has done this in the past. Does the tree look okay or is there a problem? I also notice some white coloration on the tree trunk. Is that anything?


Bonsai - Florida Sources?

UBC Maple Forum - Thu, 08/02/2018 - 17:35
Hi everyone, not sure best place on forum to post this as I could not see any bonsai section.

I have a friend in Indian Rocks Beach, Florida having problems sourcing somewhere to purchase bonsai trees, does anyone know any places in that area please,


Early spring?...

UBC Maple Forum - Sun, 28/01/2018 - 15:09
I know that we don't live in the same geographic areas, and that the trend in weather can be very different from New York to Los Angeles, not to mention Western Europe, Australia and Canada.

But here, in France, in the Loire Valley, the weather has been particularly warm -and rainy too- in the past weeks. Of course, we can still have several days under 0 C (below 32 F), but it looks like we're going to have an early spring.

Before the drizzle we've had for several days started again, I...

Early spring?...

Rootstock source

UBC Maple Forum - Sun, 21/01/2018 - 03:08
Hello everyone.

I was hoping some of you might know where I could order some Acer palmatum rootstock in band pots in the US from. The Nichols brothers mentioned a place last summer at their grafting workshop, but I can't recall where they said.


Maple Resources Discussion Thread

UBC Maple Forum - Wed, 03/01/2018 - 21:56
Hi all,

Some of you will remember that in the old forums, we had a section for links to maple-related web sites. I've moved some of these over as a "Resource" under these new forums.

General Maple resources are available here:
Maple Web Resources | UBC Botanical Garden Forums

Maple nursery listings are available here:
Note from @wcutler: I had to edit this, as the file hit the...

Maple Resources Discussion Thread

What is afflicting this maple?

UBC Maple Forum - Mon, 01/01/2018 - 15:21
i just noticed this morning this whitish lesion on the branch of one of my small maples. It's like the bark just dried up in the affected area and started to flake off. Any ideas?

Happy New Year,

Pruning advice

UBC Maple Forum - Sun, 31/12/2017 - 02:23
Need advice on possibly pruning an upright jm that has grown a little wild.

Repot now or wait

UBC Maple Forum - Tue, 26/12/2017 - 21:11
There's a fair chance this has already been answered elsewhere on here, so feel free to redirect me to another thread, but I was wondering about repotting my maples in the next week or so. Is this a bad time? Most of them are in a poor-draining media so I'll essentially be bare rooting them and doing any root surgery that's necessary. Temps here are 30-40s of the day and 20s at night. Would it make more sense to wait till closer to spring?


Largest Japanese Maple

UBC Maple Forum - Wed, 20/12/2017 - 06:13
So many people have claimed that a 35 ft tall Japanese Maple is the largest JM that you'll ever see. The first two maples are 35 ft tall. The red is from my yard. The green one we spotted locally on the side of the street.

The last photo is a picture of a 45-50 ft Japanese maple that I spotted at a customer's house. From the description of its size, I thought for sure that it was going to end up being a silver-leaf maple or a sugar maple, or that it's size had been overestimated. This...

Largest Japanese Maple

Acer Ryusen in a Window Box?

UBC Maple Forum - Sun, 17/12/2017 - 05:16
Hi all,

Having read some other threads about Acer Ryusen on here and seen a lovely photo of one in a hanging basket, I am wondering would it be possible to grow one in a window box? I have four of them on my front window and they are quite big, about 1 foot by 4 foot. Is it sustainable in the long term do you think? They are in full sun though. Probably not the right spot?

Acer seeds

UBC Maple Forum - Sun, 10/12/2017 - 22:54
Is anyone here on the forum who feels they want to sell some seeds?

Already have tried these:



buergerianum ssp. ningpoense


campbellii ssp. sinense



cappadocicum ssp. lobelii


caudatum ssp. ukurundense




x conspicuum


davidii ssp. grosseri...

Acer seeds

Fall colours 2017

UBC Maple Forum - Thu, 30/11/2017 - 23:04
Fall comes earlier this year in the UK
First pic today all the others from last weekend 16/09/17

Growing Japanese Maples Zone 7b

UBC Maple Forum - Wed, 29/11/2017 - 23:28

I have grown Japanese Maples before. I planted about 400 seeds from a mature Japanese Maple about 3 years ago. From this, approximately 150 grew for 2 years. They grew enough that it was becoming annoying to carry water jugs to the garden. I hooked up my well water, ran it a few times to "clean" it, then watered the trees thinking the water was good. They all died!

Anyways. From the same mature tree, I have collected approximately 5,000 seeds this past year. I will put them in...

Growing Japanese Maples Zone 7b

fall colors 2017 (Rome zone 9)

UBC Maple Forum - Mon, 27/11/2017 - 19:46
last spring in central Italy was with a few mm of rain ,and the summer ultra hot over 40 days over 35°C and hot wind for 10/24 hours ..many maples (10 ) are dead,many maples not have beautiful fall colors .but if are fall colors are super !!!in Italy we say:pochi ma buoni!! enjoy!

Japanese Maple Tree ID

UBC Maple Forum - Thu, 23/11/2017 - 20:10

I am a new member of the forum. Can anyone tell me what Japanese Maple cultivar this is?
  • The first seven photos were taken in April
  • The last four photos were taken in June
I have photos that I will post next which were taken in July and August.

Thanks for your assistance.

Beautiful specimens grown By: Jaycee Newman, Inc

UBC Maple Forum - Sun, 19/11/2017 - 06:56
Want to see some beautiful Japanese maples expertly grown by Jaycee Newman, Inc. This is a rare treat to see so many beautiful trees!

Specimen Japanese maples album on Flickr:
Japanese Maples

Here is a link to all their photos on Flickr (Japanese maples and other ornamental trees)
Jaycee Newman, Inc

Hope you enjoy the journey as much as I enjoyed...

Beautiful specimens grown By: Jaycee Newman, Inc

Splitting bark in Maples, once thought to freeze damage, now linked to Herbicide Glyphosate

UBC Maple Forum - Wed, 08/11/2017 - 16:31
Be careful using products containing the herbicide Glyphosate like Roundup, around Woody trees and shrubs, because it is linked to splitting bark in many varieties of Acer including Acer palmatum. It was thought that splitting bark was due to freeze thaw, until it started showing up in warm climates like Georgia and Florida. Now the herbicide Glyphosate is linked to weakening the bark making it more prone to splitting. Homeowners and growers alike should take notice.

Some of the most...

Splitting bark in Maples, once thought to freeze damage, now linked to Herbicide Glyphosate

Botanical Garden of Brest

UBC Maple Forum - Tue, 07/11/2017 - 12:00
Following our visit during the 6th International Maple Symposium, the Maple Society contributed this little Acer caudatifolium to the Conservatoire Botanique National de Brest. Kawakami Maple is a rare tender maple with dark leaves that set off a brilliant green, slightly striped bark. It has an upright habit, reaching 5-6m in cultivation, though larger in the mountains of Taiwan, where it is found between 2500-3000m of altitude. In the mild climate of Brest it may remain evergreen.


Botanical Garden of Brest


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