Do you have a few high-maintenance people in your life? You probably don't mind too much, as long as they offer some sort of trade-off (high energy, creativity, etc.). It's also important that there be only a few of them, otherwise you'd be experiencing some serious overloading, right?
Plants are a bit like people in that regard. It's OK to have a few plants in the landscape that are fussy and demand a lot of attention (assuming they have good qualities that make all that fussing worthwhile), but having too many plants that are difficult to grow means excessive work. And I don't know about you, but some days I want to just lounge around in the yard and admire my perennials, rather than caring for them.
Enter ten perennials that are easy to grow, as described in this article by Marie Iannotti. About.com's Gardening Guide touts these ten plants as being examples of perennials that "allow you time to enjoy gardening." Included in Marie's list of perennials that are easy to grow are: