following nothogenera: × Brassocattleya = Brassavola × Cattleya × Brassolaeliocattleya = Brassavola × Cattleya × Laelia × Cattleytonia = Cattleya × Broughtonia × Laeliocattleya = Cattleya × Laelia × Rhyncholaeliocattleya = Rhyncholaelia × Cattleya Cultivation Light Cattleyas need light, but not direct sunlight; in case of intense sunlight, shade must be provided. Temperature Day temperatures must be between 25-30 °C (77-86 °F) and night temperatures not lower than 10-12 °C (50-53.6 °F). Humidity Must be between 40-70% with good ventilation; however plants must not be exposed to air currents. Watering Water only if substrate is dry. It can be done once a week, but it all depends on the environmental conditions and the season. Fertilizing Cattleyas can survive without fertilizing. However, it is advisable to use nitrogen-based fertilizers without urea; fertilizers must be applied during the growth season. To avoid salt accumulation in the substrate, water thoroughly between fertilizer applications. References External links (enter "Cattleya" in search box). More info About Orchids Orchids of Costa Rica Breeding Cattleya Breeding in Cattleyas Painting of a Cattleya by Martin Johnson Heade, 1871 - National Gallery of Art, Washington Orchid Picture Gallery American Orchid Society - Orchid Web Cattleya Orchid Forum van den Berg, C. and M.W. Chase. 2000. Nomenclatural notes on Laeliinae - I. Lindleyana 15(2): 115-119. Cattleya ochids flowers pictures Photos of Thailand native cattleya orchids Orchidroots.org Cattleya Species Laeliinae genera