Why does a walnut produce a chemical, juglone or hydrox juglone? This is a naturally occurring chemical that is a defense mechanism protecting the walnut tree from surrounding plants. What happens … ...

Why does a walnut produce a chemical, juglone or hydrox juglone? This is a naturally occurring chemical that is a defense mechanism protecting the walnut tree from surrounding plants. What happens … ...

Landscaping under any tree can be challenging, thanks to the dense shade cast by the branches and the abundance of thick roots in the soil. But black walnut trees (Juglans nigra) seem to be in a ...

3. Aerate the soil near by the black walnut tree and amend the garden beds with organic matters like rotten manure, composted leaves to enhance soil microbes that can help detoxify juglone.

ST. PAUL, Minn. (AP) -- Minnesota is taking steps to protect its eastern black walnut trees from a tree-killing disease. State Agriculture Commissioner Dave Frederickson has restricted the import ...

ST. PAUL, Minn.—Minnesota is taking steps to protect its eastern black walnut trees from a tree-killing disease. State Agriculture Commissioner Dave Frederickson has restricted the import of … ...