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Questions About Desert Willow Trees

  • Answered by
    GKH_Susan on
    August 3, 2019
    Certified Expert

    It may be an insect or mite pest, possibly thrips. It's really hard to see details from the photos, but I think I see leaf stippling/spotting, and then the stunted growth is characteristic of some thrips infestations. I think it will take a keen experienced eye on site with a hand lens to look for tiny black enlongated insects. Nutrient deficiency is another possibility, but I lean toward the pest problem as best guess.

    I suggest that you contact your local U of A extension office and see if they will send out a home horticulture advisor, or give you a location to take a sample of the foliage. It should be a free service. The alternative is to hire a consulting arborist, plant health care specialist or a certified arborist from a tree service that provides tree and landscape pest control.


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