Why does your Philodendron Imperial Green have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Excessive moisture in the substrate prevents oxygen from reaching the roots, leading to Pythium or Phytophthora fungal infections. This causes the cell walls in the leaves to collapse, resulting in yellowing that often starts with soft, darkened spots.
Philodendron Imperial Green requires consistent nitrogen for chlorophyll production. A lack of available nitrogen causes mobile nutrients to be moved from older leaves to new growth, leading to uniform yellowing of the lower foliage.
Too much direct sunlight can cause photo-oxidation, bleaching the chlorophyll and turning leaves yellow or pale. Conversely, extremely low light can prevent the plant from maintaining enough energy for foliage maintenance.
As a tropical species, sudden drops in temperature or exposure to cold AC drafts can shock the plant's metabolism. This physiological stress triggers leaf senescence, where the plant sheds leaves by turning them yellow.
Your plant might also be experiencing one of these issues:
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