I've tried different periods for cuttings, differnt sizes and species. It seems that for most maples species, summer cuttings are the most successful. Acer palmatum, the plain species and some cultivars, are easy. Acer buergerianum is probably the best for this type of propagation. Maple Society members will read again the article Maurice Foster published in the Spring 2017 news letter (pp. 23-26). As usual, I tried some last summer, but very late: mid-August as far as I can remember, but of course the weather conditions in an environment are subjective. So I tried a couple A. p. cultivars, and other species. If the couple of leaves you left when doing the cutting stay until they fall like the ones on the mother tree, there's a good chance the cutting has begun to produce new roots. When they turn brown and stay on the stem, it usually means it's a failure. Among those I attempted was Acer caudatifolium. The leaves stayed green and healthy looking until the beginning of winter. October 24th, 2017: Now, these cuttings are about to leaf out. February 17th, 2018 : Of course, this doesn't mean they can live: it may just be that they're pushing out leaves from the nutrients that were stored in the stem, and they could wither when the leaves are out. At least, they're not like one (a different species or J.M. cultivar) that you can see in the background of the first picture, which is black. I didn't bother to label them for I thought that the chance they would survive were weak and if they did I would recognize them, but there must be some 'Butterly", "Deshojo" and "Beni Hagoromo"...
