产于北美和古巴的杜鹃花科山月桂属植物,并没有象杜鹃花那样,受到园艺学家应有的重视。其实山月桂,尤其是阔叶山月桂(Kalmia latifolia)作为观赏植物的潜力很大。因其叶色浓绿,四季常青,淡粉红色的花朵精美可爱,故而是最宜人的观赏花木之一。然而,山月桂扦插生根相当困难,不仅需花费很 Rhododendron lakes grown in North America and Cuba are not as important as horticulturalists due to rhododendrons. In fact, mountain laurel, especially the broad-leaved mountain laurel (Kalmia latifolia) as ornamental plants has great potential. Because of its dark green leaves, Evergreen, delicate pink flowers lovely, so it is one of the most pleasant ornamental plants. However, the root and shoot cutting is very difficult, not only costly