Hi Elmar
CoGRedeMptioN wrote:Are they typically Apically Dominant?
Not necessarily. Depends on cultivar. Some have tree like growth and will be, whereas others are very shrubby and have been developed to be used for hedging so will produce multiple buds all over the tree/shrub.
CoGRedeMptioN wrote:What does 'Hardened-off' leaves look like?
New growth will be a soft and a different colour (red, pink, purple, bronze, light green depending on cultivar/species) and will come in a flush of 2, 3 or more sets of leaves. These will go harder and turn green, usually before another flush of growth occurs. Your photo shows this on the ends of the branches.
Also the swelling looks like where some low branches have been cut off to produce a clear trunk. I doubt its a graft as most Lilly Pillys are grown from cuttings. You could cut it down to just above the shoots lower down. As it grows keep the top shoots trimmed to allow the lower branches to thicken the lower trunk. Or you could let it grow as is to thicken and trunk chop it later. You could also air layer the top off to have a head start on some growth.
It is important to remember that plants with a PBR such as this cultivar cannot be legally propagated without permission. If you take an airlayer for your own purposes it should be fine, but if you take cuttings, especially if you then offer them for sale, you open yourself to prosecution. Unlikely, but possible. PBR is a form of copyright on plant material.