Articles
Maranta Diseases
Informational table showing disease name, symptoms, pathogen/cause, and management of Maranta diseases.
Updated:
July 7, 2025
| Disease | Symptoms | Pathogen/Cause | Management |
|---|---|---|---|
| Cucumber Mosaic Virus | Leaves are small and distorted. Bright yellow line patterns form on the leaves. | Cucumber mosaic virus | Destroy affected plants. Propagate from plants free of the symptoms. Maintain good aphid control in the greenhouse. |
| Helminthosporium Leaf Spot | Small water-soaked leaf spots turn yellow and die. Spots merge and become large, irregular tan areas with a yellow halo. | Drechslera setariae (formerly Helminthosporium) | Avoid overhead watering. Apply a fungicide to protect plants. |
| Root Knot Nematode | Plants are stunted. Normally, tuberous roots appear beaded and galled. | Meloidogyne | Discard infected plants or take top cuttings and discard the roots and soil. Plant the cuttings in a pasteurized substrate. |
| Tip Burn | Leaf tips and margins turn brown and die. There may be a yellow border between the dead and live tissue. | phosphate fertilizer, fluoride toxicity, or high light intensity. | Water and fertilize moderately. Avoid using superphosphate and perlite since they contain excessive fluoride. |
| Yellowing | Young leaves are yellowed. | Lack of fertilizer, iron deficiency. | Maintain soil pH near 6. Use micronutrients or iron chelate to avoid iron deficiency. |
Prepared by Gary W. Moorman, Professor Emeritus of Plant Pathology










