I have 3 young lemon trees (2 years old). One which is planted in the pot gave 3 lemons. The 2 trees that are planted in the ground don't bear fruits. They were blooming but no fruits. What shall I do this year?
I am not too familiar with lemon trees but i do know that female trees have a tendency to produce more fruit than a male. Keep at it and do not get frustrated with its flowering. Trees take time and patience to grow and the most important thing to do is keep it alive and have it grow larger. Larger trees bear more fruit. Good Luck and Happy Growing!
There are several articles to help answer your questions: https://www.gardeningknowhow.com/edible/fruits/lemons/how-to-grow-a-lemon-tree.htm
If your trees are young, don't expect as many fruit as you will see on a more mature tree. Give them a couple years.