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Seeds 2020

UBC Maple Forum - Thu, 16/01/2020 - 16:35
I finally received the seeds from the Maple Society. I want to thank all those who collected, sorted them, put them in paper bags and posted them : thank you very much for the time and efforts spent.

Now it's up to me to find the best way to make the best of this seeds galore ;-)

View attachment 170552

PS: I had put some of my own seeds from A. palmatum palmatum directly in a ziplock bag that I put in the fridge on Dec. 5th after having soaked them overnight in water, and two days...

Seeds 2020

Need help to access to the members area?

UBC Maple Forum - Thu, 16/01/2020 - 16:16
If you are a member of the Maple Society and don't know how to access the members area, post your questions in this thread. For information on how to access the members area, see For Maple Society Members

For Maple Society Members

UBC Maple Forum - Tue, 14/01/2020 - 19:09
If you are a member in good standing with The Maple Society, you can sign up for "The Maple Society" usergroup. This gives you access to a private forum where participation is reserved for Maple Society members.

How to Join the Maple Society: Fill out one of the forms on the Maple Society website

How to Sign Up for the Maple Society forums usergroup:...

For Maple Society Members

Acer (?) id

UBC Maple Forum - Tue, 14/01/2020 - 18:41
Good evening,

I've been told this is a dwarf Acer plant. Is it so, and does anyone happen to know which particular variety it is? Bought in Macedonia, Greece. Leaves went a bit more red before falling in autumn. Pics are from summer. I notice that toward the end of summer the leaves seem a bit greener. Many thanks for your suggestions.

Flower Season is almost here!

UBC Maple Forum - Wed, 08/01/2020 - 19:10
In celebration of our forum having doubled our allowable pictures per post -- that's right, 20 pictures now allowed! -- here are 20 pictures of maples in flower. Can you guess the species/cultivar? I'm not sure I'd get them all right!


View attachment 170471 View attachment 170472 View attachment 170473 View attachment 170474 View attachment 170475 View attachment 170476 View attachment 170477 View attachment 170478 View attachment 170479 View attachment 170480 ...

Flower Season is almost here!

Truncatum VS Mono Germination

UBC Maple Forum - Fri, 03/01/2020 - 07:33
Hi, I have grown lots of Acer mono and Acer truncatum so my practical experience tells me these species are different. Their germination habits demonstrate this. Truncatum has an unusual feature of hypogeal germination, that is the cotyledons do not emerge from within the seed - it just pops out of the soil with its first two leaves. Mono should have 'normal' epigeal germination with cotyledons emerging from the seed and the ground.

However I am stumped to find this documented (from behind...

Truncatum VS Mono Germination

Filigree or Flavescens?

UBC Maple Forum - Mon, 30/12/2019 - 00:23
Hi everyone, I hope you all had a great Christmas.

I am looking at getting a new green dissectum for my garden and there are a few that I do not know much about. I already have a 'normal' green dissectum, which is lovely in Autumn but not so interesting during the rest of the year.

Could someone advise me on the differences between the green varieties. The two I think I like the most are Filigree and Flavescens which I believe have brighter colours in Spring. Also viridis and Waterfall...

Filigree or Flavescens?

JM bleeding...

UBC Maple Forum - Sat, 28/12/2019 - 20:09
Hi, Last week I went out and did a light pruning for those unwanted branches. After the next few days, I started to see some type of fluid bleeding from those cut.
Is this normal for the tree to bleed before healing those wounds or i should wait until later into winter or early spring to prune. The current temp is around hi-40 and lo-50. Perhaps these trees are not going to dormant yet. I hope I didn't hurt them too much.
Any advice is much appreciated. Thanks,

Evergreen Maples at Christmas

UBC Maple Forum - Fri, 27/12/2019 - 18:44
It's always a bit of fun to see which maples are evergreen as we pass through the solstice. It's not always the same group here in the Norman season of mud.

This year many maples are having a hard time getting the sap down: pruning over the last week has cause quite a lot of bleeding on sycamores and anything from Section Palmata. The Platanoidae are nice and dry though.

Anyone else have any maples still in leaf? I wonder what's still green at the UBC botanical garden...

Here are A....

Evergreen Maples at Christmas

Winter Damage - thoughts?

UBC Maple Forum - Fri, 06/12/2019 - 14:19
Hello all. We had a bad storm this week in NJ that produced sleet and ice before snow accumulation. The ice and snow weight ended up snapping the main runner of my new Sango Kaku (coral bark). I have attached two pictures. How will the tree react to the damage? Is it salvageable or will I need to replace it? Will growth be hindered now if it lives?

Thanks for your help!

Anybody seeing any early colour change?

UBC Maple Forum - Tue, 03/12/2019 - 01:35
As I was driving up to my house a few days ago I noticed this leaf on my Osakazuki. People often talk about how stunning the fall colours are on this cultivar and I have to admit that that mine is living up to my expectations.

I will try and take some more pics tomorrow.

Could this be a shirasawanum?

UBC Maple Forum - Sat, 30/11/2019 - 03:46
Found this tree this fall on my maple exploring mission without a label. Could this be a shirasawanum?

Acer palmatum variety to Zone 10?

UBC Maple Forum - Mon, 25/11/2019 - 21:19
I would like to know cultivars names or varieties of palmatums that support zone 10. In my city aprox. 40º C in Agost, although I have semi-shadows places to put in.

In this moment I have an Acer palmatum atropurpureum and other no palmatums like acer pseudoplatanus or acer opalus sub. granantensis.

Thanks in advance.

spiral splitting on japanese maple branches

UBC Maple Forum - Mon, 25/11/2019 - 20:30
We've been here 1 1/2 years and it seems to be getting worse. Unsure how old tree is, no more than 22 years. Tree is surrounded on east, south & west by other trees & shrubs. The north side is open and there is a house about 50-60 which blocks some of the wind. An arborist looked at it after we moved in and said maybe it's from wind damage and recommend breaking off any dying bark etc. In the San Juan Island area.

The first 2 pics are general shots. Next 3 follow one "crack" on one major...

spiral splitting on japanese maple branches

Seed germination organization

UBC Maple Forum - Sun, 24/11/2019 - 18:15
So i'm thinking about germinating each of the A. palmatum varieties seeds separated (not mixing them up) that i've collected thia year. I was wondering if that's a bad idea? What is it that others do?

I want to keep up with what seedlings come from what cultivar. Also, whats the chance of a variegated palmatum offspring being variegated, dwarf being dwarf, etc? How often do genetics and traits from the parent plant shows and how long would it take to see them.

Im aware of the seedling...

Seed germination organization

Call for comments: List of Agreed Acer Species Names

UBC Maple Forum - Thu, 21/11/2019 - 20:15
At the International Maple Symposium in 2017 the Maple Society's Acer species working group was formed with the task of compiling a list of names withing the genus for which there is broad agreement.

Chaired by Koen Camelbeke of Wespelaar Arboretum and including UBC's own Douglas Justice as well as other internationally recognized experts, the group has published a preliminary list of agreed names.

Now it's time for your input! We're soliciting opinions and comments from around the world,...

Call for comments: List of Agreed Acer Species Names

maple leaf tree

UBC Maple Forum - Thu, 21/11/2019 - 17:45
Hi everyone,

I want to know if I can plant a maple leaf tree in warm places such is Dubai city in middle east where the weather is very hot and humid in the summer .



UBC Maple Forum - Wed, 20/11/2019 - 07:47
Hello everyone. So ive been thinking its time for me to try grafting this coming spring, but was wondering when is the best time to collect scion? Any and all advise will be appreciated.


Maple Society OSI: Peter Gregory's Maple Profile: Acer robustum (A. anhweiense)

UBC Maple Forum - Sun, 10/11/2019 - 02:46
The Maple Society Open Science Initiative is please to present a new maple profile from Peter Gregory, with photos from Hugh Angus of Westonbirt Arboretum, Piotr Banaszczak of Rogow Arboretum, and yours truly. The correct name of this maple has been much disputed, and in 2010 when the original text was published in the newsletter was accepted as Acer robustum. Today we believe the species is most properly called Acer anhweiense. I hope you enjoy it!...

Maple Society OSI: Peter Gregory's Maple Profile: Acer robustum (A. anhweiense)

Upstart little JM seedling

UBC Maple Forum - Sun, 10/11/2019 - 00:50
After admiring (and coveting) so many gorgeous maples on this forum, I know it seems presumptuous of me to talk about the unusual seedling that popped up in my garden in 2015. It's likely nothing special although I do think it shows some promise . . . Possible parents are Acer palmatum ‘Osakazuki’, 'Bloodgood' and ‘Seiryu’.

JT1 gave me suggestions about how to document its characteristics throughout the growing season which I've been doing since April.
So far, it distinguishes...

Upstart little JM seedling


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