Dudley, here is the web site of Womack Nursery
http://www.womacknursery.com/pecans.html I also bought some black walnuts from Willis Nursery
http://www.willisorchards.com/I planted them in rows on 40' centers. If you haven't already, I would highly recommend doing all the research you can to make sure that you have the right soils and the right varieties for your area. I utilize the Noble Foundation out of Ardmore, OK for all my Ag advice, but they only service OK & North TX.. Hopefully these will do well ..BTW, I noticed Womack carries the Oconee variety..good luck..du
