Cosmos Sunset Orange or Cosmos Sulphureus is an annual wildflower native to Central America. Cosmos Sunset Orange is one of the easiest plants to grow from seeds. The compact growing Ladybird Cosmos grows only 12-24 inches tall producing masses of showy, medium-sized, semi-double, deep orange flowers.Cosmos Sunset Orange blooms over a long period of time all summer through fall, and the dazzling orange flowers is eye-catching and attractive to bees and butterflies.