The University of Missouri’s Center for Agroforestry has announced an official patent for its first black walnut cultivar,.

However, black walnut trees can have some negative effects on the landscape since they produce a chemical called juglone, warns Andrew St. Clair, a certified arborist and tree risk assessor with ...

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 ...

Very tall. Our small, one car garage was entirely overshadowed by one of the tree’s giant lower limbs, while others obscured the house windows down one entire side. But it was healthy and a beautiful ...