Whip and tongue grafting:

1.  Collect the Scion Wood (Desired variety you want to graft to the rootstock) around February 1 in Southern Illinois.  This should be done before the buds begin to swell. If you do not have scion wood, I have the varieties at this link available in small quantities. The best scion wood is the largest diameter shoots from last years growth, usually in the top of the tree. The scion wood  should be cut  a minimum of 3 inches of length for the diagonal cut with 2-3 buds at the end of the end (6-12").  The ends should be dipped in wax (Parafin), wrapped in a damp paper towel or newspaper, sealed in a plastic bag and placed in the refrigerator.

2. Start grafting around May 7th in Southern Illinois.  You need to wait till the bark peels easily and the temperature is forecast to be above 75 degrees for the next 3 days.  The grafting procedure with drawings is detailed at the following link. GRAFTING RESOURCES

The cleft and bark grafts described in this link work, however the union is weak and there is a stress concentration at the change in diameters.  These grafts are susceptible to breakage for several years and need to be splinted.  I prefer to let the large diameter limb sprout and graft to the sprouts the following year using the whip and tongue method. 

I prefer the Poly Budding Tape shown below.  Instead of removing the tape I usually make a longitudinal cut along the back of the graft.  This prevents girdling and does not damage the graft union.  If you need any grafting supplies, Amazon has them shown at the links below:

If you have questions email at admin@pecanworld.com  Good Luck!!!!!!!!!!!!!