Clone selected from a progeny of Prunus cerasifera in California. Rootstock for plums and most apricot varieties. Suitable for all soil types, adapts well to dry soils and heavy soils with low permeability. Moderately resistant to Agrobacterium tumefacens, Verticillium and Leptonecrosis, susceptible to Pseudomonas syringae and resistant to root-knot nematodes (Meloidogyne spp). Resistant to calcareous soils (8- 9% active lime). Suitable for replanting. All plum varieties showt perfect grafting compatibility and high yield efficiency. With plum varieties, this rootstock reduces vigour by 15-20% compared to ‘Myrobalan B’. Suckering activity is generally low.