QuestionI have several Hibiscus plants on my deck. I want to move them into my basement for the winter. I plan to locate them under a florescent light but need to know how to prune & treat them for insects, & diseases that may effect them while in my basement area before I bring them in.
AnswerHi Mike,
Thanx for your question. You can treat your hibiscus with a horticultural soap which should remove most pests that may be harbored on them. I would also treat the soil for white flies. Pyrethrum and Neem sprays applied to the surface of the soil and undersides of the plant will reduce or eliminate whiteflies. Prune lightly just to maintain the shape and order of the plant. Pruning too severely will adversely affect the plant's blooming next year unless you're okay with that. I hope this helps.
Tom