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Handbook of Florists' Crops Diseases pp 1–51Cite as

Diseases of Poinsettia

  • Living reference work entry
  • First Online:

Part of the book series: Handbook of Plant Disease Management ((HPDM))

Abstract

Poinsettia, Euphorbia pulcherrima Willd. ex. Klotsch, is a major flowering potted plant for winter holidays. Because it is vegetatively propagated and is so widely grown, poinsettia diseases are relatively well known and well studied. Being a woody plant, poinsettias are not prone to tospoviruses, but they are susceptible to a wealth of foliar problems (Botrytis blight, powdery mildew, scab, Alternaria leaf spot, Xanthomonas leaf spot, and anthracnose) as well as many common root and stem diseases (Pythium and Phytophthora root rots, Thielaviopsis root rot) as well as occasional Fusarium or Rhizoctonia stem problems. Poinsettia mosaic virus (PMV) has been associated with minor problems, and a phytoplasmal infection has contributed free branching for more attractive plants. Poinsettia diseases may be managed through clean stock production coupled with integrated pest management strategies in greenhouses where the crops are propagated and finished for sale.

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Authors and Affiliations

  1. Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Long Island Horticultural Research & Extension Center, 3059 Sound Avenue, Riverhead, NY, 11901, USA

    Margery L. Daughtrey

  2. Chase Agricultural Consulting LLC, 937 Tierra Verde Circle, Cottonwood, AZ, 86326, USA

    A. R. Chase

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  1. Margery L. Daughtrey
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Correspondence to Margery L. Daughtrey .

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  1. Chiang Mai University, Chiang Mai, Thailand

    Robert J. McGovern

  2. The Connecticut Agricultural Experiment, New Haven, Connecticut, USA

    Wade H. Elmer

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Daughtrey, M.L., Chase, A.R. (2016). Diseases of Poinsettia. In: McGovern, R., Elmer, W. (eds) Handbook of Florists' Crops Diseases. Handbook of Plant Disease Management. Springer, Cham. https://doi.org/10.1007/978-3-319-32374-9_39-1

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