Many of us in the Midwest are planting even more peonies than ever. These easy-care plants do have some problems. One is buds that never develop into blooms.
Perovskia has a handsome branching habit and looks airy with small grey leaves in spring, blue flowers in summer, and white skeletal branches in fall & winter.
Although their early spring blooms are especially treasured, hellebores are stalwarts in the garden during all seasons.
Euphorbia, commonly called spurge, is a succulent and is a valuable plant for use in hot dry sites.