When buying interior plants, make sure that you are looking for healthy, bushy, vigorous plants. Stay away from limp or leggy plants. Do not buy plants that have yellow leaves. Usually this is a sign that the plant is not getting enough light, is too old, or is having some kind of root or disease problem. Check the plant for insects by inspecting both the underside and upper sides of the leaves. Check the stems as well. By looking only at the top of the plant, you cannot al ways see the insects that may do the damage.