Some promising biological control research is being done for orchid species. "D. dadantii" has been studied in commercially valuable "Phalaenopsis" orchids. Soft rot diseases caused by "Dickeya spp" is one of the most devastating diseases in orchid production. Orchid growers have used environmental controls to provide the optimum growth conditions for the plants while minimizing the cultivation of the pathogens. Proper control of humidity and air movement combined with clean, high quality water, in a temperature and light regulated facility are the most commonly employed methods for disease prevention.