Hi,
I recently owned a house in Arizona and it has a 8'+ lemon tree outside. This winter it gave lots of lemon. I did not picked up all of them, may be some. After Valentine's day i gave some Citrus fertilizer around the root (approximately 2 ft from the root) and watered it 1-2 days next. Now i am seeing many leafs are yellowing also leafs are curling. There are lots of flowers and new leafs are coming but they are also curling. Not sure what's wrong with it. Any suggestions are really helpful.