Pests on my Lilly Pilly trees
Three years ago I bought my Lilly Pilly trees (I am unsure of the variety, but it is similar to the Tiny Trev, but not a dwarf variety) and I have been constantly battling with pests on them especially in autumn and winter each year. The leaves are drying and dropping off. There are some black spots on the branches as well as black soot. I have tried many sprays on the market (which are for mealy bugs, psyllids etc), as well as, some powder which I would regularly place in the soil, which would be absorbed by the root system. These methods only helped a little bit. What ever pest it is, it can do a lot of damage very quickly and in ruining the shape of my topiary trees.
I also occasionally get dimpling on the leaves, but the spray seems to clear that problem up quite quickly. I have spotted tiny white furry bugs on the tree as well as ants.
Any advice on what pest this could be would be greatly appreciated.