These are the pictures of plum mite galls I took today at Prusch Park in San Jose. The agricultural inspector was on site and he was labeling infected trees in the orchard. We should be checking the plum and apricot wood as we pick it during the exchanges and before grafting. pic.twitter.com/lZeGjQnXmr

This also applies to all hybrids between plums and apricots, and to almonds. For now the infected trees are found in Santa Clara, San Mateo and Alameda counties.