Genus of about 250 species of annuals, short-lived, sometimes subshrubby evergreen perennials, and evergreen shrubs, from woodland clearings and pasture in S.E. US, Mexico, and subtropical and tropical Central and South America. These shrubby, low-growing, heat-loving perennials have finely textured leaves and flowers. Their brightly coloured tubular flowers bloom generously in summer. They look like tiny cigars or firecrackers in purple, red or white with white or green tips. Native to Mexico and Guatemala, they are hardy in warm winter areas. Pinch growing tips for compact growth, and cut older plants back. Water during growing/blooming season, keeping soil evenly moist.