Light. It takes some full sun outdoors and grows well in partial to deep shade.
Water. Water often while it settles in, then let the soil dry before soaking it again. Leaves drop if the soil stays too wet or too dry.
Soil and feeding. Give it well-drained soil rich in organic matter. Once established it tolerates drought and salt.
Size. Kept as a low hedge or border, it is usually about 3 ft. The species can reach 10–15 ft in South Florida if never trimmed.
Problems to watch. Spider mites, mealybugs and scale can be serious. Treat mealybugs and scale with Insecticidal Soap.
Good to know. 'Trinette' is a dwarf schefflera with cream-and-green leaves. Leaves and sap are toxic to dogs and cats if chewed, and sap can irritate skin.
Sources: NC State Extension Plant Toolbox: Heptapleurum arboricola (dwarf umbrella tree)
