Medicinal raw materials of strawberries are mature fruits, flowers, stems, roots and leaves.
The leaves of wild strawberries are trifoliate, green on top, without pubescence, and covered with silky pressed hairs on the bottom. For medical purposes, they are plucked during the flowering of the plant together with a petiole no longer than 1 cm long and, scattered in a thin layer, dried outdoors in the shade or in a well-ventilated room. Then, during drying, they are periodically mixed.
Ready-dried strawberry leaves are stored in woven bags or in wooden boxes, inside lined with paper. The shelf life of the leaves is not more than 1 year.