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Top Questions About Boxwood Shrubs

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Questions About Boxwood Shrubs

  • Answered by
    Heather on
    May 7, 2012
    Certified Expert
    A.

    Whether of not you need to replace all of them, would depend on several factors, such as if they were all affected, what they were affected with and if it was treatable.

    As a replacement, I would consider Japanese Holly. They look similar but are not susceptible to the same diseases.

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  • Answered by
    Nikki on
    June 23, 2012
    Certified Expert
    A.

    It could be a fungus but it also be from winter burn. Treat the plant with a fungicide and that should help clear it up. You can also remove the dying foliage.

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  • Answered by
    Nikki on
    June 23, 2012
    Certified Expert
  • Answered by
    Nikki on
    July 14, 2012
    Certified Expert
    A.

    It could be a few things. One is mites. They are too small to see, but do cause damage like that. Another is a fungus. Again, there are several kinds, blight fungus being the most probable cause. Finally, if it's been newly planted, then it could be suffering from transplant shock. Giving it additional water will help with this.

    Fortunately, there is an organic solution that treats mites and fungus (and other insect pests, just in case). Treat the affected shrubs with neem oil once a week for a month. Here is more information on neem oil:
    https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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  • Answered by
    Silverback on
    July 14, 2012
    A.

    Either not enough water, or to much water. Is the boxwood well establish? How old is it? I could better answer this if I had a little more to go on.

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  • Answered by
    Nikki on
    August 20, 2012
    Certified Expert
    A.

    Pruning encourages new soft growth that is susceptible to frost damage, so hold off trimming your boxwoods till late spring if you plan to do hard pruning; light tip pruning, however, can be done any time.

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  • Answered by
    Nikki on
    October 18, 2012
    Certified Expert
  • Answered by
    AnnsGreeneHaus on
    November 26, 2012
    A.

    Curled leaves are the work of the boxwood psyllid, a small sucking insect that appears about the time the new foliage appears in spring. Growth is stunted and the leaves curl in response to psyllid feeding. Tolerate the damage unless most of the branch tips are infected; psyllids rarely affect the long term health of boxwood. When necessary, control psyllids by spraying plants thoroughly with horticultural oil or insecticidal soap as soon as they appear in spring.

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