Its scientific name derives from two Greek words "leukos," which is an ancient Greek word, and "neura," a meaning of "nerve" in Greek. Euphorbia leuconeura comes from the Euphorbiaceae. 2. The cutting should be kept dry for 2 to 3 days. Snake Plants are fond of well-draining soils. Soil should be completely dry before watering. Unlike most plants, the Snake Plant exchanges oxygen and carbon dioxide only at night to prevent water from evaporating. As the plant ages, their leaves get darker. As the plant ages its leaves get darker.