In the North these may be dug in autumn and stored in semi-dry peat moss, sawdust, or sand in a cool place until spring. These daturas generally prefer loose, sandy soils, somewhat on the dry side, and a sunny location. Those native to the Southwest will stand considerable drought. The leaves and tops are preferably harvested when the plants are in full bloom, but they may be gathered at any time from the appearance of flowers until frost. They should be stripped from the stem and dried as quickly as possible.
Fresh leaves have a fetid odor, which is lost on drying.
Seeds harvested for psychoactive purposes are collected by removing the capsules when they are ripe, but are still green and unopened. These are dried in the sun or by low heat. Seeds for growing purposes should be gathered by collecting capsules that are just opening, removing the seeds and drying in the sun. L. A small tree, growing to 10 feet tall with 8 inch long soft hairy leaves in pairs. The margins are smooth and never wavy.