When I do cuttings I do a surplus expecting a large amount of die off. I couple months ago I did a trial of a weeping cherry, that i was excited about.....out of 30 cuttings only 9 rooted, the rest rotted. Those 9 started to rot as well and i lost those too. I re did the cuttings as the window is still open, but by the time i took cuttings for the second try the japanese beetles had already emerged and started their damage on the leaves. I took 125 cuttings this go around....but the leaves have damage (damage leaves in a high humidity environment = rot) not sure if these will be any better. So i may have lost the chance to grow these this year......timing is very important.