I have a Meyer lemon tree in a pot. I’ve had it for a little over two years. Its first season, it didn’t flower. I changed its feeding and light. Its second season it flowered, but did not fruit. I upgraded my pest-management regime. The third season it fruited beyond my wildest dreams. So far so good. Now, at the end of its fruit season (I didn’t count, darn it, but I bet I got a couple dozen large lemons off of it), it appears to be dying. It’s turning black and brittle from its extremities inward.
Should I prune deadness and repot in new soil? Should I bleach the roots in transfer? Should I bathe them in a baking soda solution? Should I leave well enough alone and pray? Should I have fed it more while it was producing those massive amounts of tart yellow matter?
Any clues or hints will be greatly appreciated.