Depends on what type they are. I've seen some kaki up here, saiko I believe (acorn shaped) & some non astringent ones that both looked like they were on their own roots as I could not find a graft union. Personally I would graft to American persimmon root stock just to be sure. I don't know of any benefit to grafting to Asian root stock. And our winters have been odd the past couple years (i also live in NoVa)

Thanks eciton,

The only reason I would consider grafting to 'wild' seedling kaki (non-astringent), was because I don't have any American persimmon rootstock. Would like to share my tree with friends.

You can grow the root stock if you have time. There are native persimmons all over Nova.