I think this is a great reason why we like to use Paph. concolor as a parent - it makes beautiful hybrids and most of its progeny bloom as easily as Paph. concolor itself. Example: Take a recalcitrant old biddy like Paph. Rolfei (mine blooms at LEAST once every 20 years whether I want it to or not) and cross it with Paph. concolor to get Paph. Frank Hughes - and equally beautiful roth/brachy hybrid that blooms its heart out as quickly as it can put on new growths.