I Planted a Lemon Tree for My Wife
This spring there was plenty of flowers on the tree. They were pollinated and had tiny lemons sprout at the base of the flower. Then they all turned yellow and fell off at the base of the stem. This is the second year in a row that all of the lemons died off immediately. Any ideas?
Certified GKH Gardening Expert
There are a few reasons this can happen. The most common is that it is getting uneven watering. Citrus trees will drop their fruit first if they do not get enough water, even for a short period and they need more water when they are in fruit.
Pollination issues may also be the cause. If the flower is under pollinated, the tree may abort the fruit. A small paintbrush swirled in some of the flowers can help improve the pollination.
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