Cypress Trees
Q.

cupressus

Zone SW france | Anonymous added on August 15, 2017 | Answered

why is my potted cypresses sempervirens totem going brown?

    A.
    A.Answers to this queston: Add Answer
    Downtoearthdigs
    Certified GKH Gardening Expert
    Answered on August 16, 2017

    There are a few possibilities. This could be lack of water, damage from herbicides, salts, or other toxins, or the following two pests:

    http://hortsense.cahnrs.wsu.edu/Search/MainMenuWithFactSheet.aspx?CategoryId=1&SubCatId=3&PlantDefId=2&ProblemId=299

    http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/spruce-tree-diseases/cytospora-canker/

    These pests affect both Cupressus and other conifers. Check whether the discussed symptoms match your tree.

    https://www.gardeningknowhow.com/plant-problems/environmental/herbicide-plant-damage.htm

    00
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