Coniferous species of the Cypress family are widely distributed in the landscaping of Europe and the United States. Every year their popularity grows in our country as well. Obtaining the planting material grown and adapted to the conditions of the city of Omsk is currently relevant. The study is devoted to the study of the effect of growth stimulators on the rooting of green cuttings of representatives of the Cypress family, the growth, development and preservation of cuttings. It was found that the rooting of green cuttings of the studied thuja species has a significant positive effect on all the studied drugs: heteroauxin, kornevin, ribav-extra, zircon. Green cuttings of the studied junipers were better rooted under the influence of heteroauxin, kornevin and ribav-extra. Thickening of the root neck in thuja and juniper trees was observed under the influence of kornevin. Ribav-extra contributed to the increase in growth. Ribav-extra and heteroauxin had a significant positive effect on the overwintering of annual and biennial cuttings.

The research was conducted in 2019-2020 in the training laboratory "Arboretum" of the educational and experimental farm (Omsk). During the study, the influence of various stimulants on the growth of shoots, roots and callus formation of Western thuja was established, various types of stimulants were tested in the conditions of growing green cuttings and optimal conditions were determined.