C. jenmanii

How to Grow Jenmanii Cattleya jenmanii is a traditional Cattleya species where culture is concerned. It requires the normal temperature range of 60 F at night and 85F during the day. It benefits from lots of sun and moving air and needs only a modest dry period during the cold winter months in temperate areas like the United States. It is not particularly subject to rot, but water should not be left on the leaves and new growths at night or on cloudy days. Repot Cattleya jenmanii only when new roots begin to appear on the newest pseudobulb. In its native Venezuela, C. jenmanii grows between 1,300 and 3,600 feet above sea level in relatively dense forests. The temperature in these areas varies from about 60 to 85 F. Cattleya jenmanii grows both as an epiphyte on tree branches and as a lithophyte on rock outcroppings. There are considered to be two biotypes that come from somewhat separated areas. One type has light- to medium-lavender flowers with relatively good shape and large size. The other type produces smaller, more poorly shaped flowers, but with much richer color. In nature, C. jenmanii is reported to flower twice a year, once from February to April and again from September through October. In cultivation in the United States, however, it is normally only an autumn bloomer.