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Top Questions About Black Walnut Trees

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Questions About Black Walnut Trees

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  • Answered by
    Heather on
    September 5, 2011
    Certified Expert
    A.

    Rose of sharon, hydrangea and forsythia can tolerate these conditions.

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  • Answered by
    Nikki on
    February 2, 2012
    Certified Expert
    A.

    I believe you can plant hydrangea, forsythia and hibiscus near black walnut. Many trees, though they may reach over 5 ft., are compatible as well: arborvitae, flowering dogwood and Japanese maple are a few. This article may offer additional suggestions too: https://www.gardeningknowhow.com/edible/nut-trees/black-walnut/black-walnut-compatible-plants.htm

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  • Answered by
    Nikki on
    March 23, 2011
    Certified Expert
    A.

    All but a few plants can survive black walnut. Even when it is shredded for mulch, the wood will be allelopathic as it decomposes and kill many plants.

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  • Answered by
    Nikki on
    March 28, 2012
    Certified Expert
    A.

    Black walnuts are poisonous to most plants, so it is possible that the soil near the tree and surrounding area has some toxicity which may be affecting your hydrangeas. You may need to consider moving your hydrangeas further away if possible or grow them in raised beds or containers. This article will also help: https://www.gardeningknowhow.com/edible/nut-trees/black-walnut/black-walnut-compatible-plants.htm

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  • Answered by
    Heather on
    April 16, 2012
    Certified Expert
    A.

    It is not a potato. It actually looks like a black walnut sucker. Did you have a black walnut growing near there that you cut down?

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  • Answered by
    Heather on
    June 4, 2012
    Certified Expert
    A.

    There are many reasons this would happen. This article will go over what it could be and will be helpful:
    https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-leafing-problems.htm

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