Where to buy rootstock/understock
OK, this is my first post here so I hope I do this right. I'm looking to by some rootstock to try my hand at grafting. I have a huge japanese laceleaf maple that's iching to have some of it branches cut off and grafted. My problem is I cannot find any rootstock, local or on the web. I do have a green japanese maple that has produced some seedlings this year but obviously, they are not ready to be rootstock yet. Does anyone out there know of a place where I can get some seedlings (reasonabley priced of course)ready to be used as roostock?