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Abstract
Many woody shrubs and trees are propagated by rooting green, leafy cuttings (softwood or semihardwood) because of poor rooting response from dormant hardwood cuttings. However, this method limits cutting propagation to a short period each year. As a group of scientists, we've developed a system that allows for production of softwood cuttings during the dormant season, which could free propagation workers for field production during spring and summer.
Citation
Preece, John E.; Van Sambeek, J. W.; Henry, Paul H.; Zaczek, James. 2002. Forcing the Tissue. American Nurseryman 196(7):26-29