'Marshall's Delight' has spectacular pink flowers on a slightly smaller, very powdery mildew resistant plant. It is well suited to northern climates. The foliage is nice scented of citrus, and the flowers are delicious to everyone - hummingbirds, honeybees, butterflies, and humans.
Plant in full sun, except in hottest areas, where plants will benefit from a bit of afternoon shade. Give plenty of water to keep the plant healthy and vigorous. If watering overhead, be sure to water early in the morning to prevent powdery mildew.