I had as high as 90%, but when you sum up all sessions I can’t do much better than 40% either.
I did get 3 nectarines to take, and about 4 or 5 peaches. So I’m happy about this years grafting.
The mulberries all took, and are growing like crazy. I also grafted cornus mas (dogwood cherries) and got about half to take. I heard they were hard to graft. One was called “Early Purple”, never heard of it before.I grafted 3 of each variety and had about 5 cultivars, and got at least one take from all five.
I was happy to see good takes of Old Mixon, Arctic Jay, Foster, Clayton, Pf24c, Indian Blood, for plums I added Inca, Black Ice, Hollywood, and Rosemary.
I’m just about full now, so will only add to replace ones that don’t work, or the few places where I had failures.
I tried grafting later where some failed, but here the best time is at flowering, soon after it’s just too hot. Anyway none of them took the 2nd round. It was exceptionally warm this spring, so I got a little unlucky. Some years I would have had some takes later in the season.