Black walnut trees have high levels of the toxin juglone, in all parts of the tree, including roots and leaves. Why keep black walnut trees? They are one only a few nut trees that survive in cold ...

The black walnut tree (Juglans nigra) is well-loved for its beauty and the walnuts it grows. However, the roots of this tree produce juglone, a chemical released in the soil surrounding the tree that ...

Plants have evolved in some pretty interesting ways to ensure their own existence. One tactic that fascinates me is allelopathy, which means that a plant can harm another with chemicals it produces. A ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. The eastern black walnut is the state's official tree nut. Q • Is it OK to put wood chips from a black walnut tree in my flower ...

Key Points Kitchen garden favorites like cabbage, sweet corn, cucumbers, and sweet potatoes should be sited away from ...