On my new gardenia, I am having white fluffy icky substances on the nodes of stems and sometimes buds. sometimes when I scrape them off, a scaly like, sticky thing comes with it..... And little black gnat like things flying around the plant, which is indoors at the proper temp, in south window, not overwatered. I scrape them off every morning, but some of the big buds are coming off. Does this just need spraying with water? Insecticidal soap was mentioned. Is this a nursery item? This is my first gardenia. Thanks anyone,.