I have this Meyer lemon tree in a pot. The leaves are slowly but steadily falling off, and each little lemon turns completely black and falls off before it even grows to like a centimeter or two. What could I be doing wrong? I have a soil moisture meter and I only water it when the meter reads “dry”. Could it be my grow light isn’t right or isnt strong enough?
I just re-potted it and added fertilizer when I did that, so maybe that could be it. Is there a way to test for that so I know for sure? Soil PH maybe?