Indoor Corn Plant with Yellow Leaves

Types

• Iron chlorosis is a condition of the indoor corn plant that occurs when soil pH levels are too high and the plant does not receive enough iron from soil, reports the University of Florida IFAS Extension. Fusarium leaf spot is a fungal disease caused by the fungus Fusarium moniliforme that affects new foliage of corn plants. Fusarium fungi infects indoor corn plants if foliage is wet and exposed to spores or if the fungus is present in soil.

Identification

• Symptoms of iron chlorosis include yellow leaves with green veins, yellowing of new foliage, leaf curl and brown spots on leaves, reports the Colorado State University Extension. Symptoms of fusarium leaf spot include lesions on leaves and foliage yellowing.

Control

• The University of Florida IFAS Extension recommends reducing soil pH by adding acidic fertilizers or sulfur to potting soil to control iron chlorosis. Avoid using soil infected with fusarium fungi and keep foliage dry to avoid fusarium infections, reports the University of Florida IFAS Extension.