Help Diagnosing Tropical Hibiscus Trouble
Hello all. I'm new to this forum, so glad I found it!
I've recently been entrusted with the care of my mother's tropical hibiscus. When it comes to my knowledge of hibiscus, let's just say that I have heard of hibiscus and that's about it.
She acquired this plant over the summer. It has been outside and flourishing there until about 7 weeks ago when we brought it inside for the winter.
I sprayed it off really well and cut it back and brought it inside. It is under T5 HO lights for 16 hours/day. I water when necessary, as best as I can tell. It seemed to do just fine in those conditions, even flowering.
Nothing else has changed in its care. Now it has yellowing leaves and half brown half green leaves with yellow spots.
I guess I should mention that I do not fertilize it. It got 1 dose of slow release osmocote in the late summer.
I hope someone can shed some light on this problem for me.