I'm with you there Bob, but not the front garden, it's the back garden on the other side of the fence to the alley drive. It used to be Purple Coneflowers but they were taken out when they seemed virus'd, spiderwort and goldenrod just seem to have taken over.
Fall Clematis is another one. I thought I could manage it for several years, but then my vigilance must have eased and it got away.
Sunflowers make said list but they're tolerated as goldfinches and cardinals love them; also serve as a privacy barrier to some extent.
Paw Paw Tree - I planted a couple and waited 7 years to taste their fruit (unique), in their ninth year they're attempting to colonize by sending up new spawn from underground roots.
Perilla - makes a nice dark foil to accentuate other garden colors but reseeds itself to no end.
Finally there is English Ivy, where bounded it makes a nice (not to be mowed) area. At some point in the past I must have moved some to the garden out back and it continually jumps the 6' privacy fence into the neighbor's property.
