Answer: It sounds as though you're giving your lemon trees just the right care so the dropping foliage can be the result of dry indoor air - or perhaps your trees are near an air duct where cold air from an air conditioner is hitting them directly. Over fertilization can also cause leaf drop. It's easy to over-fertilize plants in containers. Next time, use a water soluable fertilizer such as Miracle Gro and dilute it to half-strength, but feed them twice as often. I feed mine every 3-4 weeks with a half-strength dilution of Miracle Gro and they thrive. Move your plants if they are in a draft and be sure to keep the soil consistently moist. If the roots are healthy the trees will develop healthy new foliage. Let's hope for the best!
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