IT completely depends on climate , and how you stack. Im on Long Island, and have LOTS of red and white oak. I stack in single rows,six feet high,on pallets. Stuff I was sure wouldnt be ready til next year (18 months c/s/s) is in the high teens on the MM,and burning real good in the stove right now. Granted, it is split on the thinner side(3-5" thick), but it is what it is. I have tons of ash for next year,so Im SURE that the 2-3 yr. old oak will be gr8! I guess what Im trying to say is, there are variables to consider, and one mans 3 yrs. is another mans 18 months! Burn on, brotha!