My Citrus Tree

I grew this citrus tree from the seeds of an organic fruit in 2014. 
In this pic taken 2016,  it is about 3 ft. tall. It is now over 6 feet tall. I grew a lemon tree and an orange tree at the same time,  but lost one of them in the move - I just don't know if I lost the lemon or the orange. They both look just alike to me. It'll be interesting to find out.
Current citrus tree picture coming soon!