Plum (Prunus), fam. Rosaceae.
Flowers in April, only a couple of days behind apricots. The fruits from DVRZ trees are relatively low-grade. More widespread and feels better closer to the South of Ukraine.
Plums are full of vitamins, minerals and other nutrients helpful to vital functions. They have laxative and diuretic effect, provide healing effect against atherosclerosis, cholecystitis, liver, heart, and kidney diseases, and hypertension. Too acid taste of the plums may show that they are not ripe enough - such plums are not particularly beneficial. Please, let them lie several days, wait until they ripen.