Symptoms of walnut wilt may resemble those of fusarium and verticillium wilt including wilting and yellowing leaves that eventually drop. Stem tissue may also turn brown. The diseases can be distinguished by the presence of trees from the walnut family.
Tree removal does not provide an immediate control as the toxicity can remain in the soil and debris for multiple years. Avoid growing the following susceptible plants near Juglandaceaes: tomato, potato, blackberry, apple, lilac, asparagus, chrysanthemum, peony along with many other herbaceous and woody plants. Some walnut wilt resistant plants include, but are not limited to: black raspberry, corn, bean, carrot, dandelion and zinnia. (Cynthia Domenghini)