I started a BOT..lol back in the spring from seed - it has grown to almost 3 feet tall and was healthy up to about a month ago then I had total leaf drop - the plant is in a south facing window with moderate light supplemented - The plant gets bright morning sun but I am in the northern hemisphere - great lakes area - The furnace vent is nearby but is diffused by a table that the plants sit on - It does probably dry everything out to much, in realty these plants are upstairs and the room is always on the cool side 70'f and is never hot - I did by a old brown floor model humidifier the kind with the large rolling drum - And I'm keeping the pot moderately moist. I also have the same problem with my citrus euc. I'm hoping it will come back.Will the BOT come back?