One perfectly good container for your house plants is an old baking pan. A good-sized pan of this kind will hold quite a number of plants, and, painted a lively color, will not disgrace your living room in the least. Not everyone has an old baking pan to spare so there are a good many metal and wood window boxes and plant pans for sale. These vary in size, but to be worthwhile should measure at least 6″ x 6″ x 24″, big enough to hold four or five pots and with sides high enough to cover the sides of the pots. In the section that follows, Keeping Plants Healthy, the best methods for setting out pots in boxes and pans is discussed in detail.