Peonies, Clematis, Delphiniums, and Lilies bloom at the same time as Roses, and they make natural pairings. But there are many other perennials to consider as well. Use low-growing selections, such as Nepeta and Coreopsis, to plant at the feet of your Roses. Perennials such as Digitalis and Liatris complement Shrub Roses with their vertical forms, while Echinacea and Phlox provide lovely color complements.