If the tree is in its first few years of life, if it's under stress, or if it has a very heavy fruit load, then it's best to thin the fruit at an early stage and leave only a few on the tree to maturity. The other issue is that if limes fall and are allowed to rot on the ground, it's possible that this could attract insects or other pests that could harm the tree. So if you don't want to eat the fruit, you should either remove them from the tree or clean up any that fall.
Answered on December 11, 2017
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