Here's a question I've been wondering about for some time. I've posted before about this variegated silver maple. Ten or 15 years ago I noticed a variegated branch on a silver maple in local woods. I grafted it onto saccharinum rootstock, and I've grown it on ever since. On the variegated branches, even the flowers are variegated. The problem is that it tends strongly to revert. It has two or three variegated branches and four or five nonvariegated, even though I trim off some of the green branches. It's not growing green-leaved branches from the understock--it produces green-leaved branches from the scion wood, as well as variegated branches. I'm reluctant to trim off all of the reverted green branches, because the variegated leaves turn brown and evaporate within a few weeks of emerging, so if it was entirely variegated it might be leafless by June 1. I think Vertrees somewhere refers to leaving a few green branches on a highly variegated cultivar as "photosynthetic support." The question is, if I grafted the variegated branches onto new rootstock, perhaps several times in succession, might I diminish or eliminate the reversion? If so, I could, for example, leave one substantial branch on the understock with straight green leaves, and then have entirely variegated top growth. Thanks for your opinions.