Ant Colony Under My Rosebush
I need some help with how to get rid of a huge black ant colony that is residing underneath my rosebush. I realize that ants are not harmful in and of themselves on the roses, but my fear is that their huge colony underneath my rosebush will kill it from their seemingly unending tunnels. The rose is an heirloom (I got it from my mother, now deceased, and my grandmother's antique rose is just a few feet away). So my roses are very important to me since they can't simply be replaced. So far I've tried cinnamon, cornmeal, cayenne pepper and taking shovels after shovels of ants and thier eggs and tossing them to another location and even tried drowning the little buggers. The rosebushes have been there for years, and this is the first year I've had the ant problem. I can't move it, since the roots are likely very, very established and I'd have to move other plants nearby. My sister suggested dousing the base of the rosebush with vinegar, but I hesistate to try this because I'm unsure what vinegar does to a rose. While I'd prefer to keep the solution as organic as possible, I'm open to suggestions. CAN ANYONE HELP ME?