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Sun, July 25

Backyard Gardener: Bark beetles in Arizona cypress, junipers

Arizona cypress (Hesperocyparis arizonica) is an Arizona native tree and a common landscape/windbreak tree. Cypress bark beetles (Phloeosinus spp., lower right) are a native pest that can kill these trees (and other related species) when they are under drought stress and/or lack irrigation. Arizona cypress (upper left) often displays “flagging” (dead branch tips, lower left) caused by the bark beetle boring into branch tips (middle bottom). Trees are killed when developing beetle larvae feed and girdle the tree (upper right). (Photos by Jeff Schalau, University of Arizona)

Arizona cypress (Hesperocyparis arizonica) is an Arizona native tree and a common landscape/windbreak tree. Cypress bark beetles (Phloeosinus spp., lower right) are a native pest that can kill these trees (and other related species) when they are under drought stress and/or lack irrigation. Arizona cypress (upper left) often displays “flagging” (dead branch tips, lower left) caused by the bark beetle boring into branch tips (middle bottom). Trees are killed when developing beetle larvae feed and girdle the tree (upper right). (Photos by Jeff Schalau, University of Arizona)

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