Answer: Most plants will go through an adjustment period when they are moved and brought home from the nursery. They have to adapt to the new growing conditions. Part of what you are seeing is probably due to this process. Also, these trees will typically have many more blooms than fruit, and then usually do not carry all of the fruit to maturity; this is a self pruning type of process so the plant carries only as much fruit as it can support. Here are some tips on container citrus care that you may find helpful. You may need to cut and paste the complete url into your browser to make it work correctly.
Enjoy your tree!
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