I was told that this 6-7 year old plant is a citrus plant but I would be most appreciative if someone could ID it so that i can get more information on it's care. Thank you all!
Thanks for your reply. I have never noticed any "purple tinge". Do you therefore feel that it is an orange tree? Thank you once again.
I would then tend to think it's not a lemon. Not knowing it's true identity does not prevent you from giving it proper care as it is the same for all citrus aside from the subtleties. By the way, it looks like you have more than one tree - one strong one and perhaps two weaker ones.
Compare with Mandarin orange. http://en.wikipedia.org/wiki/Mandarin_orange You should separate those trees if at all possible.