well you replanted it 2 times that will stunt growth.....also that soil looks real solid so that will slow groeth....here what to do go buy a bag of organic fertilizer some smelly shit like a mix of blood meal and bone meal usually like ace has it and a bag of soil mix some into the soil and mound it all around the plant like a lil ant hill going as high as the lowest leaves....do this every time the lowest leaves are about 6 in off the ground and you will wind up with a tree