A popular perennial for sunny areas in a yard, Moonbeam coreopsis plants bear daisy-like flowers and can take quite a bit of heat.
There are other perennial plants that don't care much for direct sun. But that's okay with gardeners, because a good shade plant can sometimes be harder to find than a sun-loving variety. For an example of a perennial plant grown in shade gardens, see my article on bleeding hearts.
For information on individual perennials, consult the following resource:
Related resource: How to Plant Flower Beds