My mother repotted a gorgeous begonia she had for years. I begged and she gave me a piece which has grown like crazy!! The problem is that while my mom's plant blooms non-stop I have yet to see one bloom on mine.....I am a beginner at houseplants but I do have several others (non-blooming varieties) that are doing very well. The plant gets morning sun but not directly. I let the soil dry to about 1" between waterings and feed twice a month...is there anything I can do?????
http://www.dutchgardens.com/Growing Begonias/5324,default,pg.html Perhaps this web link will help. According to this source, it would appear that cool nights and a few hours of early morning sun would be best for flowering.