Introduction The introduction of plants of protected land is one of the research directions of Botanical Garden (Institute) of the ASM. A large number of representatives of the genus Begonia are among the indoor plants that have won the sympathy of many generations of fl ower-growers. Based on B. rex Putz., B.cucullata  Willd., B. bowerae Liesenh., about 10,000 hybrids and cultivars, which are used for planting of greenery and decoration both indoors and outdoors, have been created (Catterall,1994). In the Republic of Moldova, a small number of taxa of the genus Begonia (10-15) are used for planting greenery indoors. Material and methods The collection of plants of the genus Begonia, which currently includes 38 taxa, served as study material. The phenological observations on plant growth and development were performed according to “the methodology of phenological researches in botanical gardens” (1975). The reproduction is accomplished vegetatively (tip, stem and leaf cuttings). Results and discussions In the greenhouses of the Botanical Garden (Institute), the collection of begonias is located in the greenhouse with tropical plants at parapet. As a result of phenological observations during 2009-20013 has been established the number of taxa that under greenhouse conditions of the Botanical Garden (Institute) reach the generative phase: 34 – bloom, 3 – fructify. B.vellozoana Brade and B.semperfl orens Link et Otto reproduce by seeds and form seedlings. The seeds of begonias are brown, in the form of powder. When they are incorporated on the substrate, the seeds are mixed with sand in order to get a more uniform germination. The vegetative reproduction is performed by apical stem, stem and leaf cuttings. The stem cuttings are rooted in river sand. The optimum temperature for rooting is + 24 to 26 ° C; the leaf cuttings are rooted in water and sand. The optimal time for rooting the cuttings is the months of spring. The substrate for planting the rooted cuttings is made of ground of leaves: red peat and river sand in a volume ratio of 2:1:0.5. It was established assortment of the most resistant taxa, at oscillations of t ° C during the months of X-XI and IY-Y, that is, 22. The mass fl owering period of begonias is from February to March. The most taxa of Begonia are ornamental plants by leaves and fl owers and can be used for decoration as solitary plants, as well as in different compositions with other tropical plants. During the warm season in the Republic of Moldova, the cultivars B. semperfl orens are used outdoors. Conclusions 1. During about 40 years, in the Botanical Garden (Institute) of the ASM, a collection of plants of the genus Begonia has been created; it currently includes 38 taxa, 34 of which reach the generative phase (34 - bloom, 3 - fructify). 2. The basic method of reproduction of begonia plants is the vegetative one (stem and leaf cuttings); B.vellozoana and B. semperfl orens reproduce by seeds, which under greenhouse conditions of the Botanical Garden (Institute) form seedlings.