I'm new to this forum and would like to post pictures of my tree. It was labeled "roseum marginatum" but I believe it gets lumped together with a variety called kagiri nishiki. I viewed the "alpenweiss" here and I got very excited since I haven't been able to find a photo of a mature version of my tree. I believe it's the same one. I'm posting my pictures and would love to know if anyone out there agrees this is the same tree :)
Re: Acer palmatum 'Alpenweiss' Daisie, your maple is definitely not 'Alpenweiss'. I am not familiar with most of these variegated types so I could not say which cultivar it is exactly, but it seems closer to 'Kagiri nishiki' and related forms and looks similar to, but not the same as, 'Butterfly'. Maybe another forum member will have a better idea of what you have there.
This is one that I prefer not to dip my feet into too deeply, because I know too little about the history of roseomarginatum and kagiri nishiki. I think Jim knows the story better than anyone else around, and I think he would be the most qualified to spot which tree you have...if either. Having said that, I agree that it is most certainly not Alpenweiss as I have two of them in my collection. It looks much more like Kagiri nishiki than the forms of butterfly I am familiar with. I would be hesitant to change the name on it because it could very well be its legitimate name.
Thanks so much for the responses. I was supposed to bring home 'butterfly' and after I planted this tree I looked at the label for the first time. I'm worried I may have to replace her since there are rules about planting in the co-op that I am in (it may grow too big for the space outside my small porch and tall enough to block window upstairs apt.). I haven't been able to find any more info or photos (mature size and form). I would settle for a photo of mature kagiri nishiki :) I really would love to keep her.
Mature size should be similar, but variegated maples can be difficult to pinpoint. Butterfly can sometimes go almost entirely white; when it does it grows slowly and may never reach over 10 ft tall and about 7 ft wide. However, heavier green trees will likely reach over 12 feet tall and nearly as wide. Kagiri nishiki is similar in the aspect that heavier greening will produce a tree roughly 15 feet tall eventually. Kagiri nishiki is known for keeping its pink coloration much longer than butterfly, which quickly changes to a creamy color.
Matt, thanks for the feedback. I'm wondering why it has been so hard to get a photo of either tree (mature roseum marginatum or kagiri nishiki), aren't form and size just as important (if not more) than foliage? I have a feeling that the form of my tree will be different from alpenweiss and butterfly, both which I like very much. I've been on this all week and hoping there's someone out there with pictures....
Finally! I thoroughly searched this website and came up with a photo posted on an older thread: http://botanicalgarden.ubc.ca/forums/showthread.php?t=8605 My young tree looks very much like this one I think. Thanks maf for starting a new thread for me and both you and matt for the info. Now I can finally go to sleep...