Hibiscus: Sick Hibiscus - What can be wrong?, 3 by mchernecki

mchernecki wrote:
This Hibiscus plant is indoors for the winter and outdoors for the summer. This summer was its best ever with hundreds of blooms and more than doubled in size. Brought back inside in mid-September and after a couple weeks the leaves would turn yellow and fall off. I noticed some fine webs (spidermits?) on it, so I sprayed a few treatments of End All II. Its been over a month since I last sprayed and the plant continues to loose leaves, they either turn yellow/ dry up and fall off, or green leaves just wilt, dry up and fall off. Now some branches are drying up and breaking off. Gets regular watering and soil is not allowed to dry up. Any ideas? See attached pictures

Thanks