We buy our thornless blackberry plants from Isons Nursery in GA and Boston Mountain Nursery in AR, both of which have web sites and will ship them to you. Our favorites are Natchez, Ouachita, Arapaho, Navaho and Boysenberries. We also have Apache, but they are more prone to getting white drupelets than the others so we've stopped recommending them to folks.

Hope this helps,

Ken Barber
Barber Berry Farm
Millbrook AL

I will have some in the spring of 2010