Hi, I have a 2 yr old Meyer lemon tree that I have received 2 days ago from a nursery in California. I live in Chicago and it is very cold here right now 5 degrees, so I opted for cold weather shipping. The tree appeared to be in good condition when it arrived so I immediately planted it into a 14" clay pot with a drainage hole. I used Miracle Gro brand potting soil for cactus and citrus containing fertilizer and mixed it with the wood chips that the tree was shipped with. I then watered it until water started to come out of the bottom. Yesterday the leaves started to dry, curl in and fall off. I have set up a full spectrum lamp this morning and used it throughout the day. The tree receives about 3 hours of sunlight in the morning, 6 hours of combined natural indirect and full spectrum lighting and 2 hours of full spectrum lighting alone. The leaves continue to curl and drop but it appears that it is growing more thorns. What am I doing wrong? ambient temp during the day: 69-72 deg. ambient temp at night:66-68 deg. soil is moist lighting: 11 hours total. (3 hours direct sun) water misting twice a day , once in morning, once in the evening. Please help me.