Petunias are amazing these days. The no longer need "dead-heading" (which does not mean that they have to be restricted from following a certain band), they spread all over with a little Mircacle Grow and they pile up in a petunia pouf by the middle of July. I love some of the trailing varieties which people are using for window boxes and hanging baskets... I used to hate the poor common petunia, but now it's a favorite as it really works for the Granny Chic garden I'm going for. It's just a lot of color for your money.