Well, while the top of the tree still is brown and shriveled, new green shoots are coming out half-way down the tree. I'm not sure if the damage was severe enough that I should pitch the tree and start over, but I think it deserves a chance to prove itself. I have a hard time throwing out a plant, even when I should. I will discard diseased plants, however.
I'm going to give the lime tree a couple through summer to see how well it rebounds. It needs pruning, but not having experienced this before, I'm not at which points I should begin the pruning. I hate to take the top third out, but that might be exactly what the tree needs.
What do you think?