A Tube Method for Grafting Small Diameter Scions of the Hardwoods Quercus, Fraxinus, Betula, and Sorbus in Summer
G.C. Douglas, J. Mc Namara and D. Thompson
In conventional grafting of oak and ash in February, the graft viability over 3 years was 15% and 97%, respectively, with 64% of oak clones responding and 100% of ash, using scions from mature trees. Using single node scions from these grafted plants, epicormic shoots, crown shoots, and a silicone tube to hold graft unions we recorded improved rates of graft viability by summer grafting. All oak and ash clones made viable grafts with efficiencies of 18% to 100%. Summer grafting of hardwoods allows several serial grafts per year and potential to rejuvenate tissues.
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