Even though melampodium has been on the market a long time, Alan says it's a keeper because it's so easy to grow. It needs no deadheading, and seems immune to diseases and insects. Each plant makes a 10- to 20-inch mound of yellow or gold flowers. The yellow-green foliage stays fresh and blemish-free. 'Derby', 'Million Gold' and 'Showstar Yellow' all do well in Alan's trials.