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Worldwide Maple Diversity, Piet C. de Jong, Ph.D., Von Gimborn Arboretum, Utrecht University, 2002

Originally published in The Proceedings of The International Maple Symposium, 2002. The Maple Society Open Science Initiative presents the first ever digital edition of this important and frequently referenced paper, which updated the the Acer classification presented by de Jong in...

Maple Society OSI: Worldwide Maple Diversity, by P. C. de Jong, First Digital Edition

My acer palmatum changed colors in Bangkok, it was a big surprise because my house had no autumn.

This is acer mono. My seeds are very fast growing in Bangkok, but I probably didn't see them change color.

Hi,

Does anyone have a photograph of late summer/early autumn new growth on Tsuma gaki?

I picked this tree up yesterday, it needs some real TLC..am pretty sure it’s Tsuma gaki, I saw a Tsuma gaki at a nursery I don’t visit often a year or so ago and am pretty sure it’s the very same tree..but it’s now lost it’s tag..it was a bit of a bargain at £50 given it has a 3+ inch trunk..there is quite a bit of dieback but there are plenty of buds all over so I am hopeful..you will see in the photo...

Tsuma gaki

Hello, my name is Surachai. I am the founder of Maple Growing Group in Thailand. My country is very hot, so it's difficult to grow. I'm happy to meet all friends who love maple. This is my seedling maple. (I'm not good at language)

Just received my 5ltr Ornatum from Ornamental Trees. It looks like a very healthy happy little plant. I'm looking forward to see the colours change.

Hello everyone!

I collected a few different types of acer seeds and was wondering if they all have the same stratification process to germinate as palmatum?

I collected:
Acer Campestre
Acer Monspessulanum
Acer Pseudosieboldianum
Acer Pubinerve
Acer Heldreichii
Acer Shirasawanum var Tenuifolum
Acer Tataricum

The Maple Society Open Science Initiative (OSI) is pleased to present Peter Gregory's Acer davidii Franchet (1886) profile, with photographs by Hugh Angus. Father David's Maple is one of the best known of the Chinese Maples in the West, where its attractive dark green leaves with orange and yellow fall colors, combined with spectacular striped bark, make it a popular addition to many parks and gardens.

Check it out at

Open Science at the...

Peter Gregory's Maple Profiles: Father David's Maple, Acer davidii

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.

I recently transplanted my bihou and noticed this morning that the trunk is blackening on the backside of the tree. It looks like it’s spreading upward. I want to save this tree so am wondering if anyone knows what is causing this change in the bark and if it can be treated. I have read that bihou have problems but am willing to work hard to help it recover. Thank you for any advice.

https://maplesociety.org/sites/default/files/capillipesGregoryItalian_vf.pdf

If you’re in the area this place is definitely worth a look..some wonderful mature maples in the gardens as well as a magnificent collection of tropical plants and trees housed in Victorian green houses

I am wondering if there is any differences in terms of their respective hardiness.

I like the look of FGL over the other two but I have had no success in getting this JM to survive more than 3 seasons in our garden. (We are a Cdn zone 6 which is about a USA zone 5).

So I am willing to try GL or V if some of you have had good experience having it overwinter in a similar hardiness zone.

Just last week I had a wonderful 0ne on one tour of a residential city garden (Ontario Canada). Beautiful perennial beds and many JMs.

The owner loves her MY. As I recall she has 5!

I think I got pics of 4 of them:

I'm in need of some advice. I tried to move 2 Japanese maples from my mom's place to my own property. One survived the trip quite well and seems to be doing fine in front of my house. The other is a mature cutleaf small tree that didn't go so well. I just wasn't able to get as much of the rootball as I hoped. And on the drive home (an hour) it shifted in the vehicle and much of the rootball was exposed. All the leaves wilted and died off. It was in such bad shape that I didn't try to...

Advice on transplanting cutleaf japanese maple

This is scolopendrifolium which did fine in its 2nd year here. About 3 weeks ago, the leaves started drooping and falling off. The only thing I could see that seemed to need doing was to take the tape off between the stick and the trunk, and then there was this red stuff on the trunk from under the tape. Might this be a fungus? The plant is making new buds where the leaves fell off, so i am stumped. Any ideas?

All bar a couple of my acers are in pots ranging from bucket size through to 36” diameter by 30” tall pots. I pot the smaller trees on every year in pots 3inches larger..the large trees that are in huge pots every 3years or so. It’s quite a task having about 65 trees now, and there’s limitations in terms of acquiring larger pots.. my question relates to the larger trees which are about 12-13 feet, last year I removed them from the pots (they’d been in them for 5years) trimmed the root...

Pot size

Hi,

Long shot but does anyone know of a palmatum cultivar that has a striking solid deep maroon/dark red purplish colour bark? The leaves have 5/6 lobes, like bloodgood dark red/purple leaves, but small, maybe 50/55mm across the the leaf. Very Upright tree, densely leaved, narrow spread of branches.. I’ve never seen it before..

Kind regards
Rich

I saw this specimen today; 5 feet, healthy and nicely shaped. BUT I was not expecting to ever see such solid green for a U. (At this nursery it is in lots of shade).

So could it be a Ukigumo or is it likely mislabelled?

And say for argument sake it is a Ukigumo. What is the chances that it will remain as is ie all green "forever"?

My Japanese Maple, as well as most trees and plants in this area, has a lot of lichen on it. Up until this year, it has done beautifully. This last fall, rather than the leaves turning their beautiful fall colors, they just died. It is now May and the tree should be full of green leaves. As you can see in the pictures, there are very few leaves. Anyone have any ideas on how to bring this poor tree back to good health?