We are selling our home and need some fast growing and hardy summer time flowers quick! We are headed to Lowe's in a bit to pick up some stuff for the house to include your recommendation of flowers...thanks.
So late in the season, I would choose what looks the best at the store...You don't have time to wait for something to bloom or fill-in. Good luck with your sale!
Geraniums are on clearance practically everywhere. They don't like lots of water, so watch, if you buy them, for yellow leaves which means you've overwatered. WalMart and farm supply stores have a lot of them still left, and uber-cheap. Also, look for some wave petunias on clearance. I even got impatiens for free at Rural King.