Killing Privet And Saving Azalea
Q: We have a spot where an azalea and privet have grown together in the
exact same spot. Knowing how strongly privet sprouts after pruning, could I
make cuts into the stump and kill it with Roundup without harming the
azalea?
A: I think your solution would work fine. You can slide a piece of cardboard
between the privet stump and the azalea stem to avoid getting any Roundup on
the azalea. Since these two plants are not close kin to each other, there will be
no connection through root grafts either.