What perennial flower can I use to replace impatiens?

I'm a beginner gardener and I'm working from a garden plan from Better Homes %26amp; Gardens. The plan recommends a small section of annual impatiens. I'd like all the plants in my garden to be perennial. Can anyone suggest a flower that is similar in appearance to impatiens, but is a perennial? I am on the cusp of Zone 6 and Zone 7.

What perennial flower can I use to replace impatiens?
Dianthus (Pinks) will live and spread year after year, and they bloom several times if trimmed back after blooming. They can also be bought as Annuals, very cheap. They do well in containers besides. There are several different shades available and you can get them anywhere that sells annuals.





Zone 6 Green Thumb
Reply:Perennials usually only flower once.


For flowers all summer long try the following site for herbaceous border:





http://images.google.com/images?hl=en%26amp;rl...





http://englishgarden.lifetips.com/cat/11...
Reply:Check out these links:





http://www.greatgardenplants.com/?pageId...





http://home.howstuffworks.com/perennials...
Reply:Allysum.