I have an indoor hibiscus that will be full of buds but they will not open.I put it outside in the summer and around September it will start to bud.It may have one full bloom.But as the weather starts to get cool I bring it inside.The buds then begin to fall,some even get quite big but will not open.I fertilize it during the warm months. Any suggestions?
Apparently outdoor conditions suitable for flowering there, indoor not. Try a brighter and more humid area indoors.
You will find excellent advice on growing tropical hibiscus here: http://www.trop-hibiscus.com/ What are you fertilizing with? Hibiscus do not like too much phosphorus, so if you are using a "bloom food" it may be inhibiting flowering. Moving a potted hibiscus will often make it drop leaves and stop flowering, but I think you should be getting more summer blooms.
You may try giving it a longer day. Give it some artificial light so it gets bright light 12 to 16 hours a day.
