Many invasive plants have harmless lookalikes that are perfectly safe to use in your yard, and this pretty tree is one of the ...

Two lookalike trees may share your yard but only one's a menace. Learn how to spot the differences between an invasive species and a valuable native tree.

*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 ...

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 ...

Blackline disease, caused by Cherry leaf roll virus (CLRV), is considered a serious threat limiting English walnut (Juglans regia) production in Italy and worldwide if walnut species other than J.