Noticed cob webs under leaves of plant

Hi I have a corn stalk plant and yesterday I noticed the leaves were very yellow along the edges
I got to looking at the plant and there were small like cob webs under the leaves
Of it and also where new growth would come from its center. What can I do for this? The bark is also falling off the stalk and it looks as if it’s molded or something.
Thanks

I think you might have a couple of problems. The spider webs could be spider mitesLearn how to identify and treat the plant pest called Spider Mites.. You can read all about spider mitesLearn how to identify and treat the plant pest called Spider Mites. and how to get rid of them in the Glossary of the website. The yellow edges sound like too much fertilizerPlants need fertilizer only when they are actively growing. Slow growing plants in low light require very little plant food. Too much fertilizer is worse than not enough. Most plants prefer a water soluble plant food at 1/2 the recommended strength. Plants that are in bloom or dormant should not be fertilized. Houseplant food contains nitrogen (N), phosphorus (P), and potassium (K). A fertilizer containing these elements in equal proportion is considered a balanced plant food. Nitrogen helps in photosynthesis and encourages the growth of leaves and stems. Potassium and phosphorus also help in photosynthesis and aid in root and flower development. Most fertilizers have trace elements of other minerals that are lacking in the soil but are necessary for good plant growth. Fertilizers have a high salt content. If a plant is not producing new leaves and doesn’t absorb the fertilizer, salts build up in the soil. These salts can burn the roots, discolor the leaves, and cause new growth to be small. or using water with too much chlorine or flouride, or water that has passed through a softener. You may have to let your water sit out over night before using it or use distilled water.