Mangosteen is usually propagated by seed. The seeds lose viability quickly, and must be planted fresh or stored in moist peat moss, sawdust or paper. Germination occurs at 2-3 weeks, and the seedlings are somewhat slow growers. They need from 50-75% shade for the first 3-4 years, then can be grown in full sun. They are sensitive to high levels of fertilizer, and should be fertilized with a dilute fertilizer solution or an organic fertilizer. Trees can be transplanted to the field after 1-2 years, when they are a foot (30 cm) or more in height. Mangosteen can be successfully grafted onto rootstocks of Garcinia venulosa, G. xanthochymus and G. hombroniana