Natalia Demidova, Northern Research Institute of Forestry,

This paper first deals with the results of Sea buckthorn (Hippophae rhamnoides L) introduction in the European North of Russia, then the research results of the development of Sea buckthorn varieties and presents the results of investigations carried out. A conclusion was drawn about its sufficient resistance in the North and its regular fruiting. At the same time, it was found out that Hippophae rhamnoides L. cultivars, developed in other regions of the country, are unresisting in the Arkhangelsk conditions. And successive sea buckthorn introduction to the North is impossible without selective improvement, directed to the development of forms with high winter hardiness in the new region of growing.