Light: Although warm, humid conditions are ideal for tropical hibiscus, you may want to provide a little afternoon shade when it’s overly hot.
Temperature: When you care for a hibiscus, you should remember that hibiscus flower best in temperatures between 60-90 F. (16-32 C.) and cannot tolerate temps below 32 F. (0 C.). In the summer, your hibiscus plant can go outside, but once the weather starts to get near freezing, it’s time for you to bring your hibiscus indoors.
Water: When hibiscus are in their blooming stage, they require large amounts of water. Your hibiscus will need daily watering in warm weather. But once the weather cools, your hibiscus needs far less water, and too much water can kill it. In the winter, water your hibiscus only when the soil is dry to the touch.