When a plant’s leaves flip yellow it’s referred to as “chlorosis.” This may simply be a part of the pure development cycle, the place outdated leaves flip yellow as they die off in order that the plant can direct power into rising stronger roots and new, younger leaves greater up on the plant for extra environment friendly photosynthesis. Nevertheless, your plant is also attempting to speak that one thing is not proper.
Have a look at the place and the way the leaf is yellowing and if there are some other indicators that the plant is unwell, like stunted development or withering leaves. This may give you clues as to the underlying trigger. When you have younger leaves which are turning yellow, then it is unlikely a part of the pure development cycle; however older leaves turning yellow could be a signal of nutrient deficiency — this might be an iron, manganese, magnesium, nitrogen, or potassium deficiency. A nutrient problem often has to do with the standard of the soil you’re utilizing.
If the plant has wholesome soil, robust roots, and entry to the sunshine it wants, and there are not any indicators of underwatering or overwatering, examine the entire plant for indicators of pests or illness that might be weakening the plant. It may have a virus an infection or be underneath assault by an infestation of aphids, spider mites, or one other bug that feeds off sap from the plant.