Scientific Name(s): "Myristica fragrans Houtt". Nutmeg is the seed of the tree, roughly egg-shaped and about 20 to 30 mm (0.8 to 1.2 in) long and 15 to 18 mm (0.6 to 0.7 in) wide, and weighing between 5 and 10 g (0.2 and 0.4 oz) dried. The essential oil obtained by steam distillation of ground nutmeg is used widely in the perfumery and pharmaceutical industries. nutmeg trees prefer moist, humid climates and fast-draining, fertile soil with a pH of 6.5 to 7.5. Nutmeg widely accepted as flavoring agents, have been used in higher doses for their aphrodisiac and psychoactive properties. Nutmeg is a widely used food spice that has received attention as an alternative hallucinogen.