Key lime tree

Question

Why is immature fruit falling off tree

Answer 1

This is a normal occurrence if there are too many fruits on the tree. They will overfruit to make sure that there are some good one's that remain on the tree. If all of them are dropping, I would look to a lack of light, fertilizer, or a watering issue. This link will help: https://www.gardeningknowhow.com/edible/fruits/lime/is-lime-fruit-and-lime-blossoms-falling-off-tree-normal.htm