Q.lemon trees are dying
trees are dying fast. I lost 4 lemons. I have one more . leaves fall off, used soap/insect solutions. citrus food, alcohol on leaves,lost all fruit and buds. clean leaves with alcohol, used tape. NEED HELP NOW…….!!! MAYBE CHANGE SOIL? HELP
It sounds like your plant is very stressed. If you were treating for pests; we would recommend Neem Oil as a good treatment.
Here are some links to help you.
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/leaves-falling-off-citrus-tree.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm