The rains are coming down in the northeast and the daylilies are poking their heads up through the soil so it is time to talk about perennials.
When it comes to combining perennials, colors from opposite sides of the color wheel combine the best. My favorite combination is that of purple and yellow. The cool color of purple ‘Maynight ‘ Salvia or blue Nepeta ‘Walkers Low’ combine beautifully with the warm yellows of Coreopsis ‘Zagreb’ and Daylilly ‘Stella D’Oro’and also go along with the yellow-orange color of Gaillardia 'Goblin'. Combine purples and yellows along with the deep maroon color of Barberry ‘Royal Burgundy” and you have an array of color which one cannot resist.
Another suggestion for combining perennials with grasses would be the combination of Sedum ‘Brilliant’ with dwarf fountain grass, coreopsis and perhaps a weeping evergreen as a focal point. As far as sedum is concerned, there are also many varieties but I prefer the ‘Brilliant’ for its more vibrant pinkish color and shorter stature as compared to ‘Autumn Joy’-but it’s a matter of opinion. The ‘Autumn Joy’ or even the Spurium ‘Rose Glow’ would also complement grasses nicely in the garden.