The roadside bramble is a common herbal medicine, and can be kept for a period of time after drying, but the length of time it is kept will be affected by a variety of factors, such as temperature, humidity, light, etc. In general, the longer the plant is kept after drying, the more its medicinal effects may be reduced. Generally speaking, the longer it is kept in the sun, the more its efficacy may be reduced, so it is recommended to use it as soon as possible. If the storage conditions are good, the roadside bramble can be stored for six months or even a year after drying.