Propagation of Gambel oak (Quercus gambelii) by layering©
Gambel oak (Quercus gambelii) has potential as a small, drought tolerant tree for landscapes in the southwestern United States. Vegetative propagation of Gambel oak by mound layering was examined in Kaysville, Utah, from 2012 to 2015. Layering was done by pruning trees to their base each year and then gradually mounding conifer shavings around the base of each tree as new shoot growth occurred throughout the season. Shoots were girdled and treated with auxin in July of each year or left untreated as controls, and harvested in October or November of each year. Rooted layers were transplanted into 1-gal. pots and grown in a greenhouse for observation. Rooting of treated shoots and controls increased with age of the stock plants and with use of auxin. Further research to improve survival of the rooted layers will be needed.
Rupp, L.A. (2017). Propagation of Gambel oak (Quercus gambelii) by layering©. Acta Hortic. 1174, 173-174