The first rose trial garden in PAS Botanical Garden CBDC in Powsin, Poland

The trial gardens for new rose cultivars are used for a preliminary assessment of their market value and applicability. There are 21 trial gardens in Europe and some of them are connected with World Federation of Rose Societies (WFRS). The breeders from all around the world can send their own new rose cultivars to these trial gardens. In 2018, Polish Academy of Sciences (PAS) Botanical Garden, Center for Biological Diversity Conservation (CBDC) was established in Powsin as the first trial garden in Poland and central and eastern Europe. At the first year, 84 cultivars from eight European breeders have been planted in this garden. The garden was divided into two parts. Part 'AR' is established for cultivars that haven't been sold on the market when they received, and part 'BR' is designed for cultivars which are sold on the market for a maximum of five years since introduction. The Warsaw Rose Trials regulations have been established according to the World Federation of Rose Societies (WFRS) standards and climatic conditions in Warsaw. The roses usually grow in the garden for two (excluding climbing type) or three (climbing type) seasons, after which they are cleared in autumn. The evaluation will be carried out by the jury and concerns. The evaluation criteria includes the general habit and growth of the bush (shoot arrangement, spreading, stiffness of shoots, breaking out), flowers (shape of bud and flower, color and keeping the color of the petals during flowering, fading, smell), susceptibility to diseases. The first main international competition of Warsaw Rose Trials took place on 28^th August, 2020.