Russian Plum CHUK is an complex hybrid of Prunus cerasifera, Prunus salicina, Prunus ussuriensis, Prunus simonii.

Parents: Skoroplodnaya x Otlichnica, breeders G.V. Yeremin, S.N. Zabrodina, released in year 1988
Plum pox virus resistance: very good
Picking season: mid August
Fruit size: medium, 28g
Fruit colour: dark maroon
Vigour: medium
Growth habit: upright
Start to bear fruit: early
Cropping: good
Bearing regularity: regular
Self-fertility: not self-fertile
Blossom frost-resistance: very good
Cold hardiness: excellent
Suitable for organic or no-spray culture: yes
General disease-resistance: very good