I've also bought quite a few Circinatums this year, and had the same questions about them as compared to Palmatums and I did for the Japonicums. Specifically: 1.) Cold tolerance vs. Palmatums 2.) Water requirements vs. Palmatums 3.) Heat tolerance vs. Palmatums 4.) Light requirements / shade, sun tolerance vs. Palmatums 5.) Growth rate vs. Palmatums 6.) Pest / disease resistance vs. Palmatums 7.) Anything else I didn't think of!! :-) I was also wondering which specific varieties you've had the most luck with or are most impressed with. I don't have a favorite yet, although I think Monroe is quite lovely, and Pacific Fire looks promising. Thanks!
They do o.k. . I had a few and always backed them up into a little more shade to reduce stress . 'Pacific Sprite' & 'Monroe' . I was in Portland OR several years ago and it was 101* so I figured it was worth a try .
i have only type specie no cultivar,is no good for zone 9b ,every summer leaves burned 80% .this acer remain in my garden because (i read) the wood of branch was used by American Native for fishing...when i'm boy i read many stories about this people....
Western North American native plants often cannot take the eastern summer humidity. Some are growing typical wild vine maple in the northeast. Colored leaf cultivars would be more vulnerable to hot sun.