There's this great little place I know called Nalls_Farm_Market. They have the most beautiful flowers! Great combinations in hanging baskets. Around Mother's day there are baskets EVERYWHERE!!
I have personally spoken with their supplier. They don't use any halts in their potting mix. What does that mean? When you forget to water it (because you are on vacation) and it dies -not a worry! Just water it and it will come right back to life and be beautiful again in a week or two. You see, most places (grocery stores, home supply stores) have suppliers that use halts so that the plants stay small for a long time on the shelf. That means they don't grow fast and won't come back to life if you are in the least bit negligent. So this is where I go to get my hanging baskets.