Container-grown plants
Clay pots usually are more attractive than plastic ones. But plastic pots retain moisture better. To get the best of both, slip a plastic pot into a slightly larger clay pot. Clay pots are easy to paint if following a color scheme. It's safest to avoid small containers; they often can't store enough water to carry the plants through hot days.
To improve drainage, place about an inch of coarse gravel in the bottom of the container with liquid fertilizer, following directions on the label. An occasional application of fish emulsion or compost will add trace elements to container soil. Place containers where they will receive maximum sunlight and good ventilation. If necessary in dark rooms, give plants extra light with fluorescent tubes. Watch for and control insect pests that may be over-wintering indoors.