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Any idea what maple species this is?...

UBC Maple Forum - Thu, 19/04/2018 - 17:44
It's probably from the batch of seeds I received from the Maple society seed exchange, but I forgot to lable it, and it's the only one of the kind I have.

It develops very fast: it's in a 9 cm round plastic pot, and is already over 60 cm tall in its second year.

The branches are dark red, the base of the trunk is beginning to turn a dull grey.

All the leaves have 5 leaflets and the internodes are quite long, especially for a tree kept in a small pot. The colours are about what they look...

Any idea what maple species this is?...

Doesn't look like Taki-no-gawa

UBC Maple Forum - Mon, 16/04/2018 - 13:53
I would love to hear from anyone who has an opinion as to what this tree might be.

I always carefully document the names of the trees I buy (this one was labeled "Takinogawa Full Moon"), even though I cannot remember anything else about its purchase more than 10 years ago. Now that I've become more interested in JMs over the years, I realize that this one was probably mislabeled.

So, what do you guys think? Three of the photos were taken moments ago, and the other is of fall color a...

Doesn't look like Taki-no-gawa

Acer palmatum mystic jewel

UBC Maple Forum - Sun, 15/04/2018 - 11:17
Anybody got any info on this , I take it new variety, as it only came with the bog standard all purpose description etc on the label. Supposedly has green leaves with a bluish/purple tinge. Looks nice on the label picture but as usual you tend to figure the photo was taken in the most favourable light



Anyone in US grafting?

UBC Maple Forum - Sat, 14/04/2018 - 23:06
I have a delightful seed-grown Japanese maple that seems to have excellent cold hardiness It is probably 6 or 7 years old now. I had many seed sources and did not keep things separated so this might be palmatum or shirasawanum or japonicum.

It survived a late transplant to Iowa City from southern IA (Mid November 2013). The 13/14 winter was bitterly cold with a low temperature of -19F. The tree had no die-back.

It seems to be a vigorous upright 4 feet of growth last year. The leaves are...

Anyone in US grafting?

Digging up Japanese maple?

UBC Maple Forum - Fri, 13/04/2018 - 21:14
Hi everyone. I don’t post much just lurk, but

I now have a collection of about 20 Japanese maples, with 7 of them planted in the ground, and the rest in pots.

I however don’t own the land, just the mobile it sits on and was thinking about taking the plunge and buying a house.

Is it possible to dig my Japanese maples up and take them with me? Is there a specific time of year (like winter) or way to do this without harm or is there always a risk?

If it’s going to harm them I’m just going...

Digging up Japanese maple?

Please help identify this disease!

UBC Maple Forum - Fri, 13/04/2018 - 15:20
View attachment 156686 View attachment 156687 View attachment 156685 View attachment 156684

Hi everyone, I am absolutely desperate for someone to please help me identify what could be wrong with my acer palmatum ‘Koto No Ito’

It has these weird marks all over the upper side of all its branches. I was thinking it must be some sort of fungus? The weird part is that the underneath of all those same branches are perfect and unmarked. I’ve tried to show this in the photo of the green...

Please help identify this disease!

Helpful ID web resourc Acer palmatum

UBC Maple Forum - Tue, 10/04/2018 - 20:47
This page is in Japanese, so use Google translate. This page has detailed photos and descriptions. Might be my new favorite!

Page compares Acer palmatum:

-Acer palmatum : Iroha-momiji
-Acer matsumurae : Yama-momiji
-Acer amoenum : Oh-momiji

葉と枝による樹木検索図鑑−類似種の見分け方 他:イロハモミジ-ヤマモミジ-オオモミジ

Very detailed photos and information for each. The bottom of the page discusses how to distinguish...

Helpful ID web resourc Acer palmatum

Codominant trunks

UBC Maple Forum - Mon, 09/04/2018 - 23:17
Hi All!
How do folks feel about codominant trunks in Japanese maples?
I usually remove one codominant trunk: many times mail order trees have them-they seem to allowed to develop by many nurseries devoted exclusively to Jpn maples.
My local nursery has one
Tsukushi gata , about 5 feet tall with two narrow angled codominant trunks, each maybe an inch in diameter, at least.
I've long wanted this tree, or an umegae, and at 62 years old, it would be nice to get a bigger...

Codominant trunks

Propagation house

UBC Maple Forum - Mon, 09/04/2018 - 22:18
Hello, I Cesar Cameselle, I live in Vigo (Spain).

Could you help me?

I was trying to build a propagation house for the care of new Japanese maples grafts.

Could you tell me the weather conditions (temperature,shade,humidity) I should keep?

Thanks and best regards.

Does this Japanese Maple look like Inaba Shidare or Tamakuyama?

UBC Maple Forum - Sun, 08/04/2018 - 02:07
Hey guys, does this Japanese Maple look like Inaba Shidare or Tamakuyama?
It's not labeled.

Any help is greatly appreciated.


Spurring new growth on winter branch die-back

UBC Maple Forum - Fri, 06/04/2018 - 21:23
Hi. My maples are in full bloom here in Oakland, CA and most are doing well but a couple had quite a few branches that appear to have died during the winter. One maple (8 yr old - Toyama Nishiki) has lost a lot of growth on the uppermost branch and it would be a huge setback to lose this branch. There are still a couple of twigs with growth but approximately 60%-80% of the twigs on this branch didn't come back. Other branches were also affected but are not as integral to the overall...

Spurring new growth on winter branch die-back

First grafts leafing out

UBC Maple Forum - Sun, 01/04/2018 - 02:24
Hi all,

I just wanted to share a few pictures of a few grafts I did last summer, and also thank Keith Guess, as without him, I would've never received the scions nor made a close mutual friend.

Hopefully I will post these in the following order:
'AKA Shigitatsu sawa'
'AKA Shigitatsu sawa'
'AP Bernie BB' (not a registered cultivar)
'Koto no ito'

Japanese Maple question

UBC Maple Forum - Fri, 30/03/2018 - 10:18
Hi, we live in Sussex, UK and in our garden we have a selection of Acers. One is a purple leaved variety - I think Palmatum - and it's quite old (at least 12 years).

We had it moved in January along with another large green-leaved Acer. The rootballs were kept as best as possible but there was an element of intertwining on the outer sections. The guy that moved it scraped the bark a bit but not too deep - and he pruned some lower branches leaving it in a Bonsai shape (which wasn't what...

Japanese Maple question

Field maple or not?

UBC Maple Forum - Thu, 29/03/2018 - 18:27
I had always thought that this tree that grew sponbtaneously in my garden was an Acer campestre (Field maple), there are many around where I live.

So I just put it in a hedge and let it grow, trimming it each year.

But I'm having doubts now: the leaves look a bit bigger than the ones I can see around (about 7-8 cm for the largest ones) and shinier. Their shape too is not exactly the same as the othrers : they more rounded, less "cut" (can't find the right term in English, indented?...)...

Field maple or not?

Introducing the Maple Society's Open Science Initiative!

UBC Maple Forum - Sat, 24/03/2018 - 19:07
Introducing the Maple Society's Open Science Initiative!

Public education and worldwide collaboration are at the heart of the Maple Society. The embrace of an Open Science model is a natural extension of our ongoing work through scientific symposia, published material, meetings and on line.

Over the next months and years we'll be publishing articles, many from our Newsletter, about once a month. These will include maple botany, culture advice, and for the first time anywhere Peter...

Introducing the Maple Society's Open Science Initiative!

Leaf retention, etc.

UBC Maple Forum - Fri, 23/03/2018 - 12:26
I'm new to this group, so I thought I'd get my feet wet by making an observation and posing a question. All of the Japanese maples in our area (Cedarburg, Wisconsin) have retained their leaves this winter. However, 'Arctic Jade,' a hybrid of Acer palmatum, dropped its leaves. Has anyone seen this before? Any problems once spring and new leaves arrive?

I only have one pure Japanese Maple ('Skeeter's Broom') because of hardiness issues here. Other than 'Bloodgood,' from which 'Skeeter's...

Leaf retention, etc.

Snow on the 'about to open buds'...

UBC Maple Forum - Wed, 21/03/2018 - 14:50
Good morning, today in the SouthEast (NC, VA, PA,...) we are experiencing the last winter push from our mother nature although we are officially in Spring. It called for 5 to 8" of wet snow began early this morning. I see most of the snow is sticking on the branches so far.
Thus I would like to know is there anything we can do to help these JMs especially their buds which are about or just began to open?. Last year we had a one day freeze in late March where some my early bloomers like...

Snow on the 'about to open buds'...

Should I name or not?

UBC Maple Forum - Thu, 15/03/2018 - 00:48
I am propagating a maple that I grew from seed that in my opinion is exceptional.

When I give away copies should it get a name?


What time of year for grafting maples?

UBC Maple Forum - Thu, 08/03/2018 - 19:11
I have a vague recollection that maples are unusual in that you don't graft them in late winter/early spring like fruit trees, but now I can't find the source. Any tips on grafting maples; which standard techniques work, and which don't?

Can sugar maple scions be grafted to silver maple rootstock?

UBC Maple Forum - Tue, 06/03/2018 - 17:58
A quick search found little about this.

Silver maple generally does better in wetter areas than does sugar maple. It also is more tolerant to alkali soils.

Anyone tried this? Tips on what time of graft, time of year, etc?


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