The disease causes long, orange-red, powdery pustules on the stems and foliage. Early death of the tops can occur. The disease is worse when ferns are attacked several years in a row. Use resistant varieties.
Fusarium Root Rot
Infected plants are wilted, dwarfed, and yellowish to dingy brown in color. Wilt on mature plants is most noticeable in hot weather in July and August. Infected plants are scattered among healthy plants. No chemical control is listed.