Acer rubescens - private collection (cutting grown). Photographs taken on April 1, 2002; May 11, 2002; October 13, 2005; and two on October 24, 2005.
Acer rubescens - Washington Park Arboretum, Seattle, accessions 1995 and 1987. Photographs taken on November 3, 2001; October 17, 2002; and in October 2005.
Acer rubescens seedling - private collection (seed grown). Ron, I am sorry that you lost your variegated seedling of this lovely tree as you mentioned in the Maples forum. This is undoubtedly one of the sisters of that tree. I look forward to seeing more of these seedlings. At the time I purchased this one, it seems that the grower mentioned that there was someone in the area who had planted this tree near pavement in full sun, and that it was doing well with great fall color. This specimen has been in a container and moved around for an exploration of the best site in a woodland setting; it seems that shadier has been better. An interesting note is that the bark changes color about a third of the way up the trunk.
I got about a dozen seeds that germinated last spring (2018). I read that they keep their leaves until December. This is true: we had a few days below zero (-5° C one night) about a week ago and here are my seedlings today:
They've grown very fast: the one with autumn colours is about 40 cm tall. Here's a photo on October 10th : And today. On the left, smaller ones that were protected from the sun by the taller ones:
A few of them today, some with their leaves still on. It's a pity my photographic skills can't render the colours in the late afternoon sun :