C. mossiae semi-alba 'H&R'

From Chadwick Orchids - http://www.chadwickorchids.com/?q=content/cattleya-mossiae Because it flowers in the spring, C.mossiae does not begin growing until midsummer, well after such species as C. labiata and Cattleya trianaei have completed their growths. Cattleya mossiae often does not complete its growth until October and then it usually sends out a flush of new roots from the new growth. It can be repotted at this time and still produce a strong flower spike in the spring. Like other cattleyas, C. mossiae should only be repotted when it begins sending out new roots from the lead pseudobulb. Cattleya mossiae should be given lots of water while actively growing in the summer and early autumn, and then watered sparingly during the cold winter months when it is dormant. Cattleya mossiae grows best if you allow it to dry out thoroughly before watering it again. When you do water, give it a thorough watering that wets all the roots in the container. Cattleya mossiae requires plenty of sun and air, and will give more flowers the more sun it receives. It is receiving too much sun, however, if the leaves feel warm to the touch. Cattleya mossiae requires a normal cattleya temperature of 58 F at night and up tp 85F during the day. Fertilizer is not needed to produce good growth or flowers, but can benefit plants grown in bark mixes. One-quarter teaspoonful per gallon of water of a soluble 20-20-20 given weekly during active growth in August and September is recommended. Use a cupful of this solution per plant per watering. Never use slow-release fertilizers. These may release nitrogen when the plant is dormant and this could cause injury to the plant.