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Many ornamental crop species (including trees, shrubs, and bedding plants) are susceptible to diseases caused by Phytophthora, a genus of plant-pathogenic oomycetes (also known as water molds) that can persist in soil for several years. This publication rates common bedding plants, shrubs, and trees on their resistance to Phytophthora.
Identification and management of Phytophthora in annuals and herbaceous perennials in greenhouses and in the landscape is discussed in this disease fact sheet.
