During the short days winter inside the home, hibiscus will enter a dormant period and will likely not flower at all. They may even lose many of their leaves. During this time they need very little water and no food. When they show renewed growth, usually in mid March. light 1/4 strength feeding with a water soluble plant food can begin with about every 4th watering. As the days grow in length, they will start producing buds and flowers once again. By mid May, regular feeding can resume through summer until September when the days start to shrink again.