If possible, locate aromatic plants near a deck or patio where they can be fully appreciated, and plant more than you usually would so that some can be harvested for a potpourri. The basis of a potpourri is the aromatic oils found within the plant. These oils are not confined to the flowers, but they are at their peak at flowering time, so harvest leaves and flowers just as the plant begins to flower. Harvesting in the morning, after the dew has dried, is recommended. Do not crowd the leaves and flowers, for they need room to dry thoroughly to avoid mildew that can destroy the potpourri.
Natural air drying at a rapid pace is best.
Drying at hight temperature may result in loss of the aromatic oils. Two kinds of potpourri can be made dry and moist. The most common, the dry method, is quicker and easier, but the potpourri does not last as long. These are available at local drugstores, hobby stores and herbal stores. Make sure the fixatives are finely ground so they can better absorb the aromatic oils.