Mom said it was a lemon, but I'm not sure. I think it's a lime. It has large sharp thorns. the fruit is green but eventually turns yellow. What is it?
A Tree I Got From My Mother.
Certified GKH Gardening Expert
Almost all varieties of citrus, including lemons, limes, and oranges can possess thorns. It is very common for a lemon to start green, as is all citrus, and then turn to its color. I believe what you have is a lemon. Here is an article for more information: