Hello, i need help with my orange tree. i bought it 3 mo. ago from florida and planted it here in georgia. it's about 4 feet tall but the leaves are turning light green not the pretty dark green that it was when it was bought. i water it in the evening. it is a red navel orange tree i live in south east ga. is there a certain type of fertilzer that i should use? please help!spatton91@yahoo.com