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Maple Forums on the UBC web-site

Anyone heard of this species?...

UBC Maple Forum - Tue, 02/03/2021 - 16:38
A friend from Poland with whom I exchanged seeds wrote me that he got several packets of seeds from the Rogow arboretum in Poland. Among them, Acer tataricum ssp. tataricum var. torminaloides

I can't find any info on this ssp./var. Has anyone any links/photos about it?...

EDIT : I stupidly followed links "corrected" by google. Finally found a few links, like on J-L Hélardot's (excellent) website. I should have read further down the page :...

Anyone heard of this species?...

Slow release v Controlled release feed for maples

UBC Maple Forum - Tue, 02/03/2021 - 12:12
As Spring feed is fast approaching, I thought I would start this thread to both ask opinions of maple growers and share what I am doing now.
Over the past couple of years I have used a 'controlled' release feed compared to what I have done for many many years previous in using a 'slow' release feed.
First of all I am not knocking the slow release as it has served me well, but it has a drawback in that it releases the feed no matter the weather or if my tree needs it or not. This I thought to...

Slow release v Controlled release feed for maples

Give your Maples a drink in March

UBC Maple Forum - Tue, 23/02/2021 - 12:54
I thought I would do this thread as I have been experimenting over the years with different watering regimes in March.
The one thing I have noticed beyond anything else, is that if you fail to water in March due to having a wet Winter and especially February, then ground trees do not flourish throughout the Summer and do not give a good show in the Autumn.
March is very soon upon us and here in Southern England and the long range forecast is dry for the next two weeks. So after all the...

Give your Maples a drink in March

Reasons for pruning Japanese Maples

UBC Maple Forum - Mon, 22/02/2021 - 21:59
Three of my Japanese maples planted in the ground are nearing 10 feet or more in height. As far as I'm concerned, they can grow as big as they like but I'm wondering if there are other things to consider and that maybe I ought to control their growth for other reasons. For example, water is scarce here in the summer and I assume, the larger the tree, the more water it will need. Also, I have to think that a smaller, more compact tree would be less vulnerable to wind and snow damage. What...

Reasons for pruning Japanese Maples

Little planting of the day

UBC Maple Forum - Sun, 21/02/2021 - 17:10
My nephew is born last week, so i welcomed him planting some trees at my sister's house.

Arakawa

View attachment 197281
View attachment 197282
View attachment 197283


Koto hime, 2 Roses and a chamaecyparis.
I will add in the back a shirasawanum Aureum next time.

View attachment 197284
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Repotting - Pot size

UBC Maple Forum - Fri, 19/02/2021 - 20:25
Hi

If a tree is currently in a pot 30cm (H) x 30cm (W) (18 litres) what increase in size would you go for when repotting?

Thanks!

'Ryusen' seedlings

UBC Maple Forum - Thu, 18/02/2021 - 23:11
I planted them from seeds taken from my potted tree, winter 19-20.

Some of them dispaly the twisted trunk of the parent tree.

View attachment 197207 View attachment 197208

Scale Question

UBC Maple Forum - Wed, 17/02/2021 - 22:48
Good Afternoon,

My Acer Pictum - ‘Usugumo’ had scale last year but I noticed it later on. This year I see them all again but very small and just starting. I’d like to knock them back ASAP. Could anyone recommend a treatment? Also can they spread from maples to pines?

Thank You.

Questions about Amagi Shigure

UBC Maple Forum - Wed, 17/02/2021 - 03:04
Hi, I am interested in this Japanese Maple but I read some posts that this tree might be difficult to grow. Is this true? I would like to know if anyone is growing this tree successfully? Or would it be better to go with a different Japanese Maple like Kasagi Yama or something similar?

Thanks

Early Spring?

UBC Maple Forum - Tue, 16/02/2021 - 18:51
After unseen temperatures for years here, down to -12°C the weather is warming up again. 15-16°c this weekend.

Before the cold spell, a few maples had begun to have their buds swelling (Acer laevigatum, Acer elegantulum), but now others are about to bud out :

Acer tegmentosum :

View attachment 197107 View attachment 197108

Acer elegantulum :

View attachment 197109

Acer rubescens :

View attachment 197110

Acer 'Katsura' and 'Orange Dream' are also earlier than other...

Early Spring?

The List of 1710

UBC Maple Forum - Tue, 16/02/2021 - 13:57
I finally picked up a copy of Maples for Gardens from the library. Great book and now in search of a good deal on a copy for myself. I read with curiousity about the 36 first described japanese maples by Ibe Ito in a work called Zoho Chikinsho, Volume 4 in 1710! Reading thru this and Vertrees was able to come up with the following


1) Aka shime no uchi
2) Kagiri Nishiki
3) Kiri Nishiri
4) Matsukase
5) Segai
6) Takao
7) Tamukeyama
8) Tatsuta gawa
9) Wabito

This leaves...

The List of 1710

Maples Winter bare bones

UBC Maple Forum - Sun, 14/02/2021 - 17:41
As the clocks went back through the night and I looked around my garden after a very heavy storm this morning to leaves practically everywhere other than where they were the day before, I thought 'what about the branches' !!!!?

We all love our trees in the seasons of Spring new growth, Summer lush leaves and of course dazzling Autumn.
But what about how they look through the Winter months, with frost, snow and raindrops hanging from every stem ?

I feel that these months are just as...

Maples Winter bare bones

Maple Resources Discussion Thread

UBC Maple Forum - Fri, 05/02/2021 - 18:13
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 online resources are available here:
Maple Web Resources | UBC Botanical Garden Forums

Written Maple resources are available here:...

Maple Resources Discussion Thread

Possible verticillium?

UBC Maple Forum - Tue, 02/02/2021 - 22:07
Hello everyone,

I have a branch on a Mikawa yatsubusa that is showing signs of dark, the rest of the tree is normal, so I suspect something wrong.
It's a tree I'm really attached to, because it took me some years to grow and start looking a bit decent and also because it's one of the most beautiful and stunning cultivar.

I saw those black parts after the tree had been fully covered by snow and I thought it was just some dirt.
But after a week of rain, they are still there.

I replanted it...

Possible verticillium?

Pruning help

UBC Maple Forum - Mon, 25/01/2021 - 01:04
Hello,

Any suggestions for pruning this branch on my Bloodgood?

Keep or cut it?

Do potted "indoor" JM need any supplemental water?

UBC Maple Forum - Sun, 17/01/2021 - 23:07
I have stored potted maples in our unheated garage for a few years and it has been my routine to provide a touch "water" (in the form of snow/ice) around the base of the tree a few times during the winter. But given that these trees are (fully?) dormant does one need to give them any moisture??

Soil pH

UBC Maple Forum - Tue, 05/01/2021 - 22:04
I remember @AlainK asking me some time ago in another thread what is the pH of the soil in our yard. I still have not checked, but I found a very old (from 1981) geological survey of the nature preserve that borders our property, and our yard is included in their maps and descriptions.
According to the survey “...this soil is very strongly acid through medium acid...”
I guess that is why Japanese maples like it.

Seeds stratification

UBC Maple Forum - Tue, 05/01/2021 - 14:43
Once again, I would like to thank the people who made the Seeds Exchange for the members of the Maple Society possible.

For some species, it's hard to find info on stratification. I made a document with what I could gather from various sources, but perhaps it's not accurate and anyway it needs to be completed. A few comments are from J-L Hélardot's website (link in the doc). If anyone is interested, I enclose the file (I prefer .odt but the forum only accepts .doc). I numbered them to save...

Seeds stratification

Cheering ourselves up with Maples

UBC Maple Forum - Mon, 04/01/2021 - 20:39
Hi everybody, during this difficult time for everybody around the world, it would be really nice for people on this and Maple Society forums to post a Spring photo of one or more of their Maples that are starting to leaf out. I know it would cheer me up. I will attach one of mine. Its Katsura, hope you like it.

Chilling requirement for japanese maple?

UBC Maple Forum - Mon, 04/01/2021 - 19:22
I bought a cute japanese maple in a low pot (not a true bonsai, but one that may have some potential) It was an impulse buy. We enjoyed it all summer.

I know that these trees are not hardy in Edmonton. In the fall once it had dropped all it's leaves I put it in a shed, over a barrel of water then put foam pad around it, and topped with a garbage bag. Temperatures inside this have been -3 to +2

My idea is to keep it here long enough to satisfy it's chilling requirement, then to bring it...

Chilling requirement for japanese maple?

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