Black Walnuts

Discussion in 'Gardening and Agriculture' started by Deb75476, Oct 28, 2008.

  1. Deb75476

    Deb75476 Guest

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    Do black walnut hulls contain juglone or other growth inhibitors? My husband brought some home and I am afraid to put them in in my garden or anywhere I want things to grow until I checked to see if the hulls contain bad stuff.
     
  2. rainbowgardens

    rainbowgardens Well-Known Member

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    Yes, they do. Even the leaves contain it, which is why you should'nt compost them. Plan your garden away from the trees.
    I recently read that sycamore trees also contain substances that inhibit growth in other plants.