They can be in a south window during dark, winter months. They bloom beautifully under fluorescent lights. In fact, they seem to grow better under them. They should be fertilized at every watering, using a one-fourth strength solution. Water from the top, to prevent salt build-up in the soil, but avoid wetting the leaves.
Many libraries have how-to books on the subject.
Plants suitable for bonsai work that can be treated as house plants include pyracantha, common myrtle, gardenia, and small-leaved azaleas. These miniature trees make fascinating displays in all stages of training. Pinch the growing tips to encourage branching and keep the plant potbound. An indoor garden light can serve more than one purpose. It can be a night light, room light, or safety light, helping to offset the cost attributed to the plants.