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Questions About Hickory Tree

  • Answered by
    Downtoearthdigs on
    March 28, 2018

    Pentas like sun. My best guess is the simplest one - the shade cast by your hickory tress is keeping the pentas from getting the light that they need.
    There's another less likely but not impossible cause. Hickory nut shells exude a small amount of a chemical called juglone. You can read about it here:
    Juglone can be toxic to some plants. If the trees have been dropping nuts for years, there's a chance the juglone in the soil has reached a level that's toxic to your pentas.

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