The group of trees, shrubs, and perennials whose flowers or leaves are fragrant is an important group in the development of an interesting variation in landscape plantings, especially on the larger places. There are certain varieties of shrubs, such as the common mock orange, the flowers of which are extremely fragrant, while the flowers of some of the other varieties have no odour whatever. This is a peculiar condition which has not been fully explained, but one which makes a marked difference in the effect of plantings from the standpoint of the fragrance of their flowers. A garden possesses greater charm if fragrance is one of its attributes. In older times many plants were grown for their sweet odours, both of flowers and leaves. This feature has not been given its due importance in the landscape plantings of to-day, and a little study will convince one that a wealth of fragrance can be easily obtained in any planting of trees, shrubs, and perennials, by the proper selection of a few types of plants. The fragrant honeysuckle has a very attractive odour, while the tartarian honeysuckle has flowers with no fragrant odour whatever. The horse-chestnut has flowers with little or no odour, while the false acacia and the black locust fill the air with fragrance. Violets, trailing arbutus, and lilies-of-the-valley add a certain fragrance to the garden, which odour is entirely lacking in many other varieties of perennials.