I had a lime tree and a orange tree I had planted 5 years ago. My nephew cut them down and the one we babied came back to life and is now about 5' tall. We have not seen any fruit from this tree. Why? What can we do to get the tree to produce/ To be honest, I am not sure which tree survived-the lime or orange tree. We are pretty sure that it is the lime and we were hoping it would produce and then we would know for sure. Can you help?