Horticulture is a branch of agriculture. Its main task is to obtain biologically valuable high-quality produce. At present, intensive and super-intensive horticulture is a promising trend that can significantly increase yields and reduce production costs at a high planting density of fruit trees. Research in the field of nursery growing is of great importance in the intensification of horticulture, since the laying of intensive fruit orchards is carried out only with high-quality, leveled planting material on clonal rootstocks. The climate for growing gardens in the Russian Federation is different and specific, but in the Udmurt Republic in recent decades, agrometeorological conditions have become more favorable for growing many fruit crops. Unfortunately, there are no large nurseries in the region, so it is necessary to lay out new, improved mother plantations. On their basis, it is possible to grow certified planting material that meets all modern requirements. Experiments in studying the effect of cutting terms on rooting, growth, and development of the clonal rootstock of the apple tree 54–118 took place in 2020–2021 in the department of introduction and acclimatization of the Udmurt Federal Research Center of the UB RAS. It was revealed that the vegetative propagation of the clonal rootstock of the apple tree, carried out from the beginning to the middle of June, on average, gives at least 60% of rooted cuttings. Rooting is reduced to 28–12% when cuttings are taken at a later date. The best biometric indicators of rootstocks were also obtained during the first period of cutting.