Pasqueflower
One of the first flowers to wake up in the spring, pasqueflower bears lovely silvery foliage and cheery purple blooms. It has an extended season of interest thanks to its graceful seed heads that remain showy through early summer. Allow it to reseed and it will establish a small -- non-aggressive -- colony in your garden.
Name: Pulsatilla patens
Growing Conditions: Full sun and well-drained soil
Size: To 1 foot tall
Zones: 4-9