Why does your Calathea setosa have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyCalathea setosa is a tropical species that requires high humidity levels. Dry air causes moisture to evaporate too quickly from the leaf margins, leading to chlorosis (yellowing) and crispy edges.
Excessive moisture in the substrate suffocates the roots, preventing oxygen uptake. This leads to systemic yellowing of the leaves as the root system begins to decay from fungal pathogens like Phytophthora.
Calatheas are sensitive to fluoride, chlorine, and salts found in municipal tap water. Over time, these minerals build up in the leaf tissues, causing yellowing patches and tip burn.
A lack of available nitrogen in the potting mix prevents the plant from producing sufficient chlorophyll. This typically manifests as a uniform yellowing that starts with the oldest, bottom-most leaves.
Your plant might also be experiencing one of these issues:
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