I have a lemon tree outside, it is about 25 feet high. I have had it for 8 years for the first 6 years no blooms at all. Last year it gave me 6 deformed lemons, but this year it is blooming and there was lots of blooms. But, even though there was lots of lemon the lemons are dropping off the tree long before they are ripe. So far I have picked up 345 baby lemons from the ground. Not too many left on the tree. What is the problem.
Some fruit drop is normal, but these articles will help you access the care.