Ants in the Argyranthemums
I have lots of argyranthemums - several varieties, pink & white. For the past month I have been having problems with ants apparently nesting in them. The ants seem to excavate the base of the plant, heap earth up the stem and do whatever ants do.
The plants are dying off one by one. I have tried disturbing the ants, adding more compost to the base of the plant but I don't think I am winning.
Does anyone have any suggestions?
Strangely enough, the ants seem to prefer the pink argyranthemums and seem to have left the white ones alone.