In the 1960s Prof Sagarik was actively involved in the collecting, propagating of Thai species. His enthusiasm and dedication was such that it infected the whole Thai community and resulted in the search, collection, propagation and preservation of Thai species. He embarked upon a concerted search for the different forms/varieties of ascocentrums, rhynchostylis [I]gigantea, vandopsis, vanda esp coerulea etc. His involvement with Rhyn gigantea and V coerulea is the stuff of which legends are made. In Thailand almost everyone knows 'Chang Deng' (gigantea) and 'Faa Mui' (coerulea). There are many primary vandaceous hybrids made by Prof Sagarik and bearing his name too.