Tree Grafting

The science behind inosculating (self-grafting, or easily grafted) species is as follows:

For grafts between two plants to be successful in the long-term, new connections must be obtained between vessels conducting water, sugars and hormones. Woody plants have a single ring of rapidly growing new cells called the “cambium” layer that have the potential to produce both water and sugar conducting vessels. Soon after plants are joined, and the cambiums of both stems are aligned, the cut surfaces begin to heal by producing cells that connect the grafted parts. These new cells connecting the grafted pieces are now able to become vessels to move those waters, sugars, and hormones through the graft union. 

Some of these grafted tree projects are 30 plus years old.

They have been created  across the United States.