Hibiscus is a tropical plant that requires at least 3-4 hours of sunlight along with a warm and humid environment. 2. Hibiscus can tolerate a temperature of 16-32℃. So make sure to shift the plant indoors during winters. 3. During summer, a large amount of water is required to keep the plant healthy. However, during winters, water it only when the soil dries. Excess water may kill the plant. Make sure to have proper drainage.