⟩ I’ve moved a big hibiscus that was outdoors all summer into our south bay window. It’s still putting out blossoms, but the leaves are dropping.
Don’t worry about the leaf drop. It’s natural for a hibiscus to drop leaves when it is brought into dry indoor air. Mist it often to help it adjust. It will overwinter well as long as it isn’t over-watered. This may be happening if the foliage turns from strong green to a ghostly green. If that occurs, take it out of the pot and let the root ball dry for a day or two before you put it back. Fertilize with a dilute, balanced mix once a month until the days begin to lengthen and new growth begins.