The leaves grow on trailing stems that gracefully spill over the sides of planters and hanging baskets. You can use these stems to propagate the plant, which is a robust and quick grower—gaining about 5 to 15 inches per year—but does not live long without propagation. In addition to its unique sphere-like leaves, the string of pearls produces white flowers in spring with a pleasant cinnamon-like scent; although, it rarely flowers indoors. This plant is toxic to humans and pets. Given enough light and fertilizer, it will grow quite vigorously in a season. A single plant will survive for about five years if properly cared for, but if you propagate new plants from stem cuttings, you can effectively keep it alive indefinitely. String of pearls plants thrive on a combination of direct and indirect sunlight, totaling between six and eight hours a day.Keep the plant's soil lightly moist during the growing season in the spring and summer, then reduce water during the winter months.