It's one of the shrub dogwoods such as Cornus amomum or something similar.

I'm not aware of any major success in cross Genera grafting. Quince and pear work. Almost any cactus species can be grafted onto another cactus species. But as a rule, I don't think it works. Honestly, if what you proposed with Wisteria, for example, worked, it would probably already be done by the nursery trade. However, that doesn't mean you couldn't try. The species definitely need to be closely related, you won't be able to graft things from completely different families together. You wouldn't be out much except a little time and a minimal amount of supplies, and you would learn more about grafting and practice your technique.

Working on a school project. Please see my exchange page. PP

Fate carried me here. For months I have been offering wild plum trees to anyone who wanted to dig them up. There are dozens of them outside my door.It's about a 2 hr drive from Blanco to Taylor.Make your way to Austin and head north on I35. In Round Rock, take the Hwy 79 exit to drive east to Taylor. It's already getting hot but ground to ground plantings ought to survive with sufficient watering. You can email me @ magreene09@yahoo.com for a phone #.