If water collects in the pot, the roots will rot. If you see any disease on the leaves, mix a quarter teaspoon of baking soda or some neem oil in one litre of water. Spray this mixture in the morning or evening, and the leaves will regain their health. Also, make sure to remove old, fallen leaves from the pot regularly. For fertilizer, you can use natural things from your home. Mix neem cake, dried used tea powder, banana peel powder, and a little Epsom Salt. Add this mix to the base of the plant once a month.
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