My lemon tree froze in 2016 but came back in 2017 in all new growth.

We had the same thing happen with a lime tree.... all of the new growth came from the root ball of the tree... which is grafted to the "fruit stock"... the root stock is usually not good at making or keeping fruit. ... you might have to invest in a new tree.

Hi!

I found a site that talks about everything I think you need to know about lemon trees going thru the deep freeze and how to access the damage and fix it. Hope it helps.

https://arborgate.com/blog/helping-citrus-recover-from-the-freeze/

Yes it should. Give it a couple of years. At any rate, it's shiny green leaves are attractive even without fruit!

Yes it will recover, just be patient. Recovery times depends on how long it was frozen.

https://www.treehelp.com/freeze-damage-of-citrus-trees/

It may take some more time to reach the fruit stage again, but it should in the future. Be patient and treat it as if it is still producing to keep it healthy and you will again be picking lemons.

Mine froze last winter for the first time ever. I certainly hope both of our trees produce the numerous and wonderful lemons again!