The lantana (Lantana oamara) is native to tropical America and may grow wild in the southern U.S. It is grown as an annual for use in hanging baskets. The more upright forms are appropriate for flower beds. Lantanas are free flowering on new growth. They have a disadvantage in that rain may cause older varieties to shed their flowers. Through breeding, hybridists have been able to develop free flowering in more compact, low-growing plants which do not shatter as readily. These are the plants offered in the greenhouse trade for sale today.
Source: • Connecticut Greenhouse Newsletter #93