Begonia imperialis, the imperial begonia, is a species of flowering plant in the genus Begonia, native to southern Mexico and Guatemala. It has gained the Royal Horticultural Society's Award of Garden Merit.
B. 'Silver Jewell' should also not be subjected to temperatures lower than 50°F. The ideal range is 72° to 75°F which is easily provided in a flourescent light cart. Watering must be done carefully, particularly in a terrarium, so as not to get water on leaves.
Apply a slow-release fertilizer sparingly in spring. Beautiful accent plant for borders and containers.