Tropical soda apple (Solanum viarum Dunal) is a solanaceous weed, armed with prickles on stems, leaves, petioles, and calyxes. It is native to Argentina, Brazil, Paraguay, and Uruguay (26) and was introduced in the 1980s into Florida, where it thrives as a perennial, particularly in the southern part of the state (11). It has spread rapidly throughout Florida, now occurring on more than 405,000...