Key Symptoms of Fusarium Wilt Begins as a yellow flagging of branch shoots and leaves. Wilting progresses upward on the plant and at first may appear only on one side of the plant or branch. The water-conducting xylem turns reddish brown. This can be seen by slicing vertically through the stem near the soil line and looking for the discoloration between the central pith and the outer portion of the stem. Key Symptoms of Verticillium Wilt General wilting and yellowing symptoms are similar to those of Fusarium wilt except they are not restricted to one side of the plant or branch.
Symptoms begin with a general or blotchy yellowing of lower leaves.
Discard wilted plants. Do not compost plants infected with either of these wilt pathogens. In other words don't follow tomato with pepper, eggplant, or potato. Tomato Spotted Wilt Figure 9. Tomato spotted wilt virus occurs on many plant species, and many weed species and perennial ornamentals are hosts.