I have two fruit trees that do not produce fruit. I have a dwarf Meyer in a big pot. It came w/a large amount of blossoms, which all fell off except one. . . which is trying to grow. I have had other blossoms flower, but they turn to very small green lemons, then die and fall off. I also have a dwarf grapefruit in the ground which has not even produced a blossom. Both trees are healthy with big green leaves. Please help.
Why Fruit Trees Not Producing
Certified GKH Gardening Expert
Have you fertilized? Nitrogen encourages leaves to grow, but not fruit. Too much can actually keep a plant from producing fruit. This article has information on how to fertilize your trees: https://www.gardeningknowhow.com/edible/fruits/citrus/fertilizing-citrus-trees-best-practices-for-citrus-fertilizing.htm
I would also try giving them some phosphorus rich fertilizer, like bone meal. If they are lacking phosphorus, the trees will not be able to produce blossoms (which means no fruit).
The requirements for lemons are very similar to that of limes. If you have not read it yet, this article may also be helpful: https://www.gardeningknowhow.com/edible/fruits/lime/reasons-and-fixes-for-lime-tree-not-producing-blossoms-or-fruit.htm