I have a young Acacia bonsai which has been invaded by mealy bugs (I believe?), primarily on the branches circled in red. They are brown, stick themselves to the plant, and can be seen walking up and down branches (they have legs), especially after I poke one. And they have excreted white hairs, crystals and blobs.
I first used rubbing alcohol and an earbud to directly kill most of them, but have since been spraying daily with this insecticide. From what I can tell it has been killing off the stragglers. I have some questions:
- Can I keep the infested branches or would the plant recover better if I pruned them off completely?
- How much longer should I keep with the spraying?
- Can I leave the dead mealy bugs on the plant? There are hundreds of them and it would take hours to remove each one and I'll likely further damage the plant in the process. Will they eventually be worked off as the plant grows and recovers?
See close ups (these mealy bugs are all DEAD):