Hi everyone, I am very new to growing citrus trees. Last Saturday I bought 3- variegated lemon, meyer lemon and a key lime tree. I bought miracle grow potting soil for palms and citrus and replanted all 3 in new potts. my trees are getting about 8-10 hours of sun everyday and they are doing pretty good i would say. Some leaves do have a few brown spots- I'm thinking that this may be a sunburn. my question- what is the best fertilizer to buy? Can I use the same for all 3? When do I fertilize them since I just bought them? My trees are still very little and I live in Kansas, where its currently very hot and humid. I would be thankful for any helpful tips. Thank you