do the leaves have uneven light and dark patterns, or clearly defined ring spots?
Do the leaves have spots?
Are the leaves yellowing, wilting and, dying?
Are the leaves curled and yellow?
Are the leaves discolored, fine webbing may be present?
Do the leaves and stems have white, cottony clusters on them?
Dasheen Mosaic is a viral disease spread by aphids. Unfortunately, there is no cure for viruses when they infect plants. Remove all infected plants and destroy them. Control aphids to prevent the dasheen mosaic virus.
Your plants might be suffering from fungal leaf spots. Spots may enlarge rapidly, especially in wet weather. Prune off all infected leaves. Spray plants with sulfur to prevent the disease from spreading, especially if the weather is wet. Prevent problems by thinning plants to provide good air circulation.
Yellow leaves that wilt and die usually indicate Root rot. Several pathogens cause root rots of seedlings as well as mature plants. Poorly drained, overly wet soil promotes rot so choose well-drained sites and add organic matter to improve drainage. Remove and destroy infected plants. Solarize the soil before replanting.
Distorted, curled leaves are caused by aphids. These tiny insects cluster under leaves and on growing tips where they feed on plant sap. Leaves, stems, and buds get distorted, and later leaves and flowers drop from the plant. You can control them by washing them off the plant with water spray. Insecticidal soap should be used with severe infestations.
Spider mites are known to cause problems for elephant ears plant. Hose off plants when symptoms first appear. A strong stream knocks mites off plants and may give control. Introduce predatory mites. For severe infestations, spray plants with insecticidal soap or pyrethrin.
White, cottony clusters on leaves and stems are caused by mealybugs. These tiny insects are covered with a fluffy white coating. They feed by sucking plants sap. They produce sticky substance honeydew which makes leaves sticky. You can control them by washing them off the plant with water spray. Insecticidal soap should be used with severe infestations.
If your plant has wilting leaves and stunted growth, the culprits may be root maggots. These maggots are white and feed on the roots. They leave brown tunnels in the root. Use cardboard collars around seedlings. Introduce natural enemies to the area.
https://www.burpee.com/gardenadvicecenter/encyclopedia/annual-flowers/learn-about-elephant-ears/encyclopedia__ElephantEars-article.html#howToCommonPests
Ellis, B. W., Bradley, F. M., & Atthowe, H. (1996). The Organic gardener's handbook of natural insect and disease control: a complete problem-solving guide to keeping your garden & yard healthy without chemicals. Emmaus, Pa.: Rodale Press.
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Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/