Plants of the genus Linaria are scientifically interesting owing to the presence of natural-transgenic forms containing a set of agrobacterial genes (so-called cT-DNA). Many Linaria species are valuable ornamental plants. However, until recently, the literature did not describe the method of genetic transformation of plants of the genus Linaria. In this paper, we present the method of in vitro agrobacterial transformation of plants of Moroccan toadflax (Linaria maroccana Hook. f.). Method of adaptation for in vivo conditions is also described. This technique will be used in further studies of the functioning of сT-DNA and can also be recommended for solving applied problems.