Wow Steve is that from to little sun or to much. Is the tree close to a window and getting a cold draft ?

Brian

Center of the room under a 10 LED chandelier.

Steve

Steve I forgot to mention my New Zealand is also loosing lot's of leaves. All my other trees are doing fine with very little leaf drop so maybe its just a New Zealand lemon thing. Your tree and mine did have a lot of fruit this season which probably took a lot of strength out of them. I have a feeling these trees are like Murcott's. The Murcott' s some years produce so many fruit that some trees die.

Brian

No leaf drop on any my citrus except for two out of four Poncirus, which have gone dormant, as I expected. I keep them all at about 60 - 64 F with supplemental lights. Used to get leaf drop when I kept them at about 70F.

Had some leaf drop on my Meyer lemon after I brought it inside the warmish house in the early winter/late fall. Temp in the room was around 68 or so, but if wife and kid turn on the gas fire place there, it got a lot warmer and incredibly dry. So I moved the plant into my cool-ish garage (45 - 60ºF) and it hasn't dropped one leaf since.

Hey Steve, just a few fell off my orange tree when I forgot to water it. It's drinking water faster than I can keep up. But it's not dropping anymore so no pic. All my others are kept on my very cold porch, 40's, so none there either. I will have a huge pile of them if for some reason I accidently set the heat too high above 60 one day.

3/4 of leave gone and about to die back like last winter. This tree may grow best by getting a base skeleton it dies back to and let it explode in spring then flower ripen fruits and die back.

My Meyer lemon dropped most of the leaves in the fall, after I brought it inside. Currently under a light with not too many leaves. Hoping that it will do better this year.

My small key lime plant dropped most of it leaves about a month back and now it is full of buds and handful of leaves. I am not going to bother with it much and leave it alone.

One of my mandarins always sheds 20-25% and did so this year over the first 2 months inside under lights. My others (lemon, finger lime, moro, ponkan, owari, cara cara) seem oblivious to the transition.