Tree Blog

Quercus macrocarpa x lobata | Davis

Walter Cottam and associates at the University of Utah carried out a variety of artificial oak hybridization attempts, many of which were successful. In the middle of the 1960’s, branches of Valley Oak, with flowering catkins, were sent to the University of Utah, from the University of California, Davis. These were used to cross with a variety of oaks, including the Bur Oak, an offspring of which is shown here. This is Q. macrocarpa x lobata, and the Bur Oak heritage is plainly evident in the “broad-shouldered” growth habit. 

Dave Muffly