Good Worming agent, which stimulates the growth of plants, is used for watering the seedlings of rambling grape vine at the stage of budding of fruiting and young grape, the stage of fruit setting and maturation. This application increases the level of yield, the content of fructose in the fruit, the number of berries in the bunch and the number of bunches. In addition, it improves the leaf system and accelerates the ripening of grapes.