I really like to try to get osage cut and quartered early in the year. Probably not a bad time in Ohio. I usually go for Feburary in Memphis, TN. Reason being, I believe if you get the moisture content down a bit, say 3 or 4 months off the stump and quartered down to stave size, them freakin bugs don't get as excited about munchin' on it when the hot weather comes. Least that has been my experience for the last several years. Plus, no point working hard in the heat of Spring/Summer. 30s and 40s is perfect osage cutting weather.