Why does your Chrysanthemum Aurelio have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Nitrogen is a mobile nutrient; when deficient, the plant moves it from older leaves to new growth, causing older foliage to turn pale yellow. This is common in Chrysanthemums during high-growth stages if soil fertility is low.
Excessive moisture in the substrate displaces oxygen, leading to anaerobic conditions that damage root hairs. This prevents the Aurelio Chrysanthemum from absorbing essential nutrients, resulting in chlorosis.
If the soil pH is too high (alkaline), iron becomes chemically unavailable to the plant. This typically manifests as interveinal chlorosis, where veins remain green but the tissue between them turns yellow.
Oomycete pathogens like Pythium thrive in wet Chrysanthemum soils, attacking the root system. As roots decay, the plant loses its ability to transport water and nutrients, causing widespread yellowing.
Your plant might also be experiencing one of these issues:
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