Posted: 08/06/2015 at 14:53
Once again, the berries do not produce a tree like the parent. In fact in the last 20 years we have never actually seen any berries on our double flowered Haw. I have a feeling it is a sterile one.
Air layering only works on things which will produce roots from leaf buds on the stem. The procedure forces a shrub/tree to change those buds into root buds. Trees which do not have that ability will not root.