Phomopsis Tip Blight of Juniper

by Paige Thrush, Nancy J. Taylor  & Francesca Peduto Hand

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Phomopsis tip blight is a disease that causes tip and shoot blights, cankers, and dieback on a wide range of conifer species and is especially destructive to nursery and landscape plantings of junipers in central and eastern America. Commonly affected species include creeping juniper (Juniperus horizontalis), savin juniper (J. sabina), Rocky Mountain juniper (J. scopulorum), and the eastern red cedar (J. virginiana). Other susceptible hosts include cypress, false cypress, arborvitae, English yew, Japanese plum yew, true cedar, Japanese cedar, hemlock, European larch, jack pine, true fir, Douglas fir, and giant sequoia.