The bases of the leaves on my dracaena and yucca plants have become mushy and are falling off. In fact, all of my houseplants appear to be sick and/or dying since being repotted and fertilized. I waited a month after fertilizing before repotting. I have a White Bird of Paradise that endured a brutal Oklahoma winter beautifully and now it seems like every frond is browning, curling, and dying. I have had most of my plants since October, and they all did very well throughout winter. I am a first time plant-caregiver but I am very adamant about keeping them happy and healthy. . . please help!