Chamaecyparis lawsoniana ‘Ellwoodii’, Cryptomeria japonica ‘Elegans’ and x Cupressocyparis leylandii have great importance in terms of usage areas as ornamental plant. The overcoming the problem, that may be encountered in generative propagation of these taxa, using vegetative propagation method are very important for producers dealing with park and garden works. It was investigated that the effects of different greenhouse medium, rooting medium and phytohormones on propagation by hardwood cutting of studied taxa. In this study, three greenhouse medium (Greenhouse-1, 2 and 3 medium), two rooting medium (perlite and peat) and four phytohormones (IBA 1000, IBA 5000, NAA 1000 and NAA 5000 ppm) were selected. The first root and callus formation dates, rooting percentage, callus percentage, root length and the number of roots were determined. The results showed that the highest rooting percentages for C. lawsoniana ‘Ellwoodii’ were obtained as 100% in peat rooting medium (IBA 1000 ppm) at Greenhouse-2 medium and Greenhouse-3 medium and perlite rooting medium (control) at Greenhouse-3 medium. On the other hand, the highest rooting percentages for C. japonica ‘Elegans’ were obtained as 100% in IBA 1000, IBA 5000 and NAA 1000 ppm treatments at Greenhouse-1 medium, while this value for x C. leylandii occurred in NAA 5000 ppm treatment (73.33%) at Greenhouse-2 medium, in perlite rooting medium for both. The conditions required for the best rooting in cutting propagation vary according to the species studied, and generally, auxin applications, rooting medium temperature 5 °C higher than air temperature and use of perlite rooting medium can be recommended.Chamaecyparis lawsoniana ‘Ellwoodii’, Cryptomeria japonica ‘Elegans’ i x Cupressocyparis leylandii od velike su važnosti s obzirom na njihovo područje uporabe kao ukrasnog bilja. Prevladavanje problema s kojim se može susresti u generativnoj reprodukciji ovih svojti vegetativnim načinom razmnožavanja vrlo je važno za proizvođače koji se bave parkovnim i vrtnim radovima. Istražen je utjecaj različitih stakleničkih supstrata (SS), supstrata za ukorjenjivanje (SU) i fitohormona (F) na razmnožavanje reznicama proučavanih svojti. U ovom istraživanju odabrana tri staklenička medija (Staklenik-1, 2 i 3), ????dva supstrata za ukorjenjivanje (perlit i treset) i dvije aktivne tvati fitohormona (IBA i NAA) s dvije koncentracije ppm (1000 i 5000 ppm). Određeni su datumi nastanka prvog korijena i kalusa, postotak zakorjenjivanja (PZ), postotak kalusiranja (PK), ukupna duljina korijena (DK) i broj korijena (BK). Rezultati su pokazali da su najviši postoci (100%) ukorjenjivanja zabilježeni kod C. lawsoniana ‘Ellwoodii’ u supstratu od treseta (IBA 1000 ppm) na podlogama staklenika-2 i podlogama staklenika-3 i podlogu za ukorjenjivanje perlita (kontrola) na stakleniku-3 mediji. S druge strane, najveći postotak ukorjenjivanja za C. japonica ‘Elegans’ dobiven je kao 100% u tretmanima IBA 1000, IBA 5000 i NAA 1000 ppm na podlogama SS-1, dok se ova vrijednost za x C. leylandii dogodila u tretmanu NAA 5000 ppm (73.33%) na podlogama SS-2, u medijima za ukorjenjivanje perlita za oba. Uvjeti potrebni za najbolje ukorjenjivanje u razmnožavanju zrelim reznicama razlikuju se ovisno o istraživanim svojstama, a općenito se mogu preporučiti primjena auksina, temperatura supstrata za ukorjenjivanje 5 °C viša od temperature zraka i uporaba perlita za ukorjenjivanje
