Individual gardeners adopt approaches to pests and diseases ranging from the laissez-faire attitude of enjoying the natural history aspects of bugs and fungi, to a scorched earth policy of total elimination. The latter tech¬nique can work on a few specific pests and is necessary for some vegetable crops. Fortu¬nately, with ornamental plants, only the occasional pest or disease becomes a serious problem. However, the range of ornamental species which can be grown make a detailed discussion of this aspect of horticulture beyond the scope of this work.

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