i tried 3 scions of a large Asian white onto Mex cream
they all failed.
i get lots of suckers coming up from the ground
an inch or 2 away from my Mex cream.
When i pull them up by hand, i might get 4 to 5 inches of underground growth
but, usually no real roots.
if i dig them out, and even get just a small amount of root
i can get them to take, with high success...
If there is no root at all, they dont take (or maybe 1 in 10 does)
even if there is several inches of light colored stem underground.
it has to have some root.