Tropical hibiscus is different from hardy garden hibiscus. Establish which plant you have before deciding where it can spend winter or how much seasonal pruning it needs.
Tropical hibiscus needs warmth and light
Choose a bright growing position with room for new branches. Introduce strong sun gradually after indoor growing. A tropical hibiscus is not managed like a hardy deciduous hibiscus, so plan protection before cold weather arrives.
Match watering to the leaf canopy
A large, leafy plant can use considerable water in warm weather. Water the root ball thoroughly when needed and allow drainage. In a cool, dim room the same pot may remain wet much longer; do not carry over a summer interval unchanged.
Flowers follow healthy new growth
Use an appropriate feed during active growth at the labeled rate. Pruning can shape the plant and stimulate branches, but it also removes buds and delays the next display. Make cuts for a reason rather than trimming every shoot continuously.
Check falling buds and yellow leaves
A recent move, dry roots, saturation or pests can all affect the plant. Examine leaf undersides and the root zone before changing several things at once. An individual flower is brief, while the overall display continues as new buds open.
Related reading
Potted Tropical Hibiscus: Compost, Feeding and Growth