The study on the non-traditional fodder plant for the Republic of Moldova Hrișca de Sahalin (Polygonum sachalinense) was included the content analysis of the main nutrients, the appreciation of the nutritional value of the green mass and the appreciation of the silos prepared from this plant. It was found out, that the green mass of the plant during the prebranching and branching period contained 84.77-75.0% moisture, 16.06-11.25% crude protein, 2.87-2.42% crude fat, 27.81-36.12% crude cellulose, from 43.47 to 40.78% of extractive substance doesn’t contain nitrite and it has an energy value of 0,19 to 0,2 nutrients units. Hrișca de Sahalin can be successfully ensiled. The obtained silage has an olive color with pleasant smell of pickled vegetables and the lactic acid content is about 78-80% of the total organic acids. This plant starts its primary intensive growth in the spring. In the second decade of April it can be used as a supplement to the basic ration for farm animals throughout the green season. Polygonum sachalinense is a multiannual plant. Its exploitation within 10-15 years and under the conditions of the Republic of Moldova can ensures a harvest of 800-1000 quintals of green mass per 1 ha.