I have 4 Hibiscus plants and none of them are blooming! They haven't bloomed for two seasons now! They were all proficient bloomers prior to LAST summer, when I went through a nasty divorce. (I often wonder if they didn't bloom because of the tourmoil around them even though they were outside the house!). I cut them back early this year, I have re-potted and re-soiled them all and have been giving them a blooming food. They look very health with bright green leaves... very good shape but NO BLOOMS! ANY SUGGESTIONS WOULD BE APPRECIATED!