Scaevola plants fill a niche for gardeners seeking a heat tolerant plant for their summer containers: its thick stems ensure drought tolerance in full sun locations, even in triple digit temperatures. Scaevola plants are intriguing specimens for the hanging basket, where you can observe their hand-shaped delicate blooms up close. The plants will die at the first hint of frost, but it's easy to pot up a few cuttings for the next season.