Spanish broom and hollyhocks
Geez, these plants just flourish everywhere except my yard! I even see hollyhocks sprouting up in concrete parking lots. My broom just sits there, never growing beyond the gallon size I bought it a year ago. My hollyhocks grow about a foot tall and just won't flourish. I water, I fertilize, I ignore, I try everything. I give up. Unless someone has a foolproof suggestion.