In summer, the plum fruit is ripe, but the seeds have not been separated. The quality of plum kernels picked at this time is the best. Specifically, June-July is the best time to pick Prunus humilis.

The main reasons for choosing the summer series are as follows:

1, the best drug effect: at this time, the dark plum kernel contains a lot of fatty oil and hydrocyanic acid, which has the effects of moistening dryness, relieving cough and relieving constipation, and has the best drug effect.

2. Best quality: June-July is the mature period of ebony fruit. At this time, the picked ebony nuts are full, with the best quality and the richest nutrients.

3. Maximum yield: Prunus humilis has the largest yield in summer, which can meet a large number of market demands and is also convenient for collection and processing.