In most books on rock gardening, a large part of the space is devoted to the description of plants, and of individual varieties. This is as it should be, and to those who are taking up seriously this fascinating form of gardening, the acquisition of at least one or two of these larger volumes is by all means recommended. Anyone planning a rock garden should conduct more research than simply what this article contains.Bulbs for a Rock Garden:To one who thinks of bulbs in terms of Darwin tulips with three-foot stems, and the modern Giant Trumpet daffodils, in the spring garden, or of gladiolus a...