Syzaya blackberry belongs to the genus Rubus of the Pink family. The genus Rubus includes more than 300 species of plants, most of which grow in the Northern Hemisphere. The gray blackberry is a shrub with lying or rising shoots up to one and a half meters in height. Leaves are collected and dried throughout the summer, preferably during flowering. This can be done in several ways. The easiest way is to cut them so that the rest of the petiole does not exceed three centimeters, and dry them in the fresh air in the shade, in a well-ventilated room or in an oven at a temperature of about 50 degrees. Dried leaves should retain their natural color and not have brown spots. Another way is to cut the leaves in early spring together with the young shoots of the shrub. Drying, as in the first case, is done in the shade or in a room with good ventilation. The leaves are left to dry, and then kneaded, moistened with water and wrapped in a clean cloth. After a day, when the leaves are fermented and acquire a pleasant aroma, they should be quickly dried and stored in a dark place. Dried leaves should be stored in a tightly closed container
tare.