I tried my first three grafts this spring and all three failed. I traded for the scion wood for a saijo persimmon and bartlett pear in January. I stored the wood in the refrigerator crisper in sealed plastic bags with a damp paper towel in it until April 20. I used a cleft graft to attach the saijo scion to my fuyu stock on a branch about the same diameter as the scion and used electrician tape over the graft and graft sealant over the tape and the end of the scion. I used the cleft in the same manner to attach the bartlett scions to my hosui and shinko asian pears. None of the grafts took. Do you think it was poor grafting technique or possibly the scions were maintained too long in the fridge.