Hibiscus plants like light and warmth to thrive. A south or west facing window is best for direct sunlight. Too much heat, though, in the warmer months will hurt the plant, so keep the root zone cool in summer by using a coating of mulch over the potting soil. The plants commence active growth in early spring and go semi-dormant in the fall. Water frequently from March to October.
Some people even water once a day to keep the plant happy.
Do NOT let the pot stand in water, though. In winter, decrease your watering and let the top layer of soil dry out in between. Too much water in winter, especially if your home is cool, will cause root rot as well. Fertilizing is also a key factor if you want your Hibiscus to bloom prolifically. Too much phosphorus promotes many green leaves and few flowers.