Posted: 05/03/2014 at 22:39
Perhaps you have enriched a little too much peanuts. Hardy geraniums really don't like it too rich.
Did you plant out as,small,roots? They often don't make it or at least struggle. I would pot up or purchase potted plants. Wargrave pink is an old trusty variety that I grow in a dry sunny....even poor..situation. Rozanne too in ordinary soil.
I grow several varieties....Elke, Melinda, Patricia, Russell,Pritchard, Tanya rendell, etc etc etc. and all grow in ordinary to poor soil. I also think your soil may be too wet.
I really don't think ants are a problem.