Growth on a Saguaro spotted December 12, 2010 on the Quartz Trail in the southern McDowell Sonoran Preserve. Below are photos showing comparisons between 2010 and 2015.  Click each photo and then click opened photo again for full resolution image.

2nd Specimen spotted in the North area of the McDowell Sonoran Preserve on January 29, 2015 (images at bottom)