This compact Arie Blom hybrid, the same cheerful yellow as its butterfly namesake, spreads a 3 1/2in-wide circle of petals around the prominent orange cone, radiating a summer-long display above stocky, well-branched plants. The delightfully fragrant blooms, which age to creamy yellow, blend companionably with neighbors in borders or pots. PP 24,631
Echinacea, a North American genus in the Daisy family, has big, bright flowers that appear from late June until frost. Coneflowers thrive in average soils or hot, dry conditions and shrug off cold. Blooms last well, cut or dried, and the seeds in the large cone at the heart of the flower head provide nourishment for birds. Coneflowers are equally at home in formal borders or cottage gardens. Deer resistant. For more information on growing and care, click on "Growing Guide."