The yellowed areas will eventually turn brown and die. Generally, older leaves are affected first. Symptoms progress up the plants until only a few leaves remain on the top of the plant. Generally both sides of a plant are affected equally. Plants affected when young may be stunted.
Plants often show no symptoms until they are mature and bearing heavily.
Fusarium wilt begins with lower leaves wilting or drooping, turning yellow then brown, and dying. Often just one branch or branches on one side of the plant will show symptoms. Leaflets on one side of the petiole may be affected, while those on the other side may be unaffected. Bases of affected stems are sometimes enlarged. Symptoms often become apparent while fruit is enlarging, although plants may be affected at any age, from seedling to maturity.