Browsing Washington State University Extension by Author "Garfinkel, Andrea R."

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  • A grower's guide to the most common diseases of peony in the United States 

    Garfinkel, Andrea R.; Chastagner, Gary A. (Pullman, Washington : Washington State University Extension, 2020-01)
    Peonies are hardy, long-lived perennials grown commercially and privately for their large, showy flowers. Peonies are typically considered relatively easy to grow; however, there are a number of pathogens and pests that ...

  • Tobacco rattle virus in peonies : a reference guide for cut flower and rootstock producers 

    Garfinkel, Andrea R.; Steinlage, Todd; Chumley, Janice; Chastagner, Gary A. (Pullman, Washington : Washington State University Extension, 2017-07)
    Tobacco rattle virus (TRV), previously referred to as Peony ringspot virus or Peony mosaic virus, is one of the most widespread viruses of peonies. There have been reports of this virus throughout Asia, Europe, New Zealand, ...