There is nothing here to suggest that there is any commercial slant despite the implication of the title. It is a thoroughly informed and instructive book for the growing tribe of indoor gardening. The advice is good commonsense:- know what you grow; relate your project to the room setting; study the growth factors; select your plant material with a view to the needs of light, temperature, humidity; study the potentials before plunging. The authors are not primarily philosophical; they are sternly practical on such matters as Light, Soil, Watering, Containers, Planters, etc. When it comes to care, a gardener-they say- is no better than his observation -- and plants are individuals. Plant pests and disease; propagation and a few specific categories such as bulbs, orchids, cacti and succulents come in for special consideration. The last section is a carefully annotated Plant Listing, which contains sufficient choice for most indoor gardeners. The proofs contain none of the illustrations of which there will be a generous assortment of photographs and drawings.