Why does your Citrullus lanatus have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyNitrogen is a mobile nutrient in watermelon plants; when deficient, the plant moves nitrogen from older leaves to new growth, causing uniform yellowing of older foliage. This often occurs in sandy soils where watermelon crops are typically grown.
Watermelon plants are susceptible to waterlogged soil which suffocates the roots. This lack of oxygen prevents nutrient uptake, leading to chlorosis (yellowing) across the leaf surface.
The nymphs of squash bugs feed on watermelon leaves, sucking out cell contents. This damage causes localized yellowing and eventual necrosis of the leaf tissue.
This fungal pathogen thrives in high humidity and cool temperatures. It creates angular, yellow chlorotic spots on the upper leaf surface, often with dark fuzzy growth underneath.
Your plant might also be experiencing one of these issues:
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