Holes in Oak tree - Ask Extension
Attached are pictures of the mutable holes showing up on our Oak tree, sap has been dripping onto our patio. Would we be able to spray to kill wha...
Knowledgebase
Holes in Oak tree #276463
Asked September 08, 2015, 12:40 AM EDT
Attached are pictures of the mutable holes showing up on our Oak tree, sap has been dripping onto our patio. Would we be able to spray to kill whatever bug is doing this, or will the entire tree need to come down? thanks,
Sacramento County California
Expert Response
From 1000 miles away, I believe that you are not troubled by insects but by sap sucking woodpeckers. The regular pattern of holes, horizontally across the trunk or limb side by side are pretty typical. Below are several links with suggestions for management.
http://cals.arizona.edu/yavapai/anr/hort/byg/archive/sapsuckers.html
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74124.html
You call also contact your local Extension Office in Sacramento which maintains a Master Gardener program. These specially trained volunteers can help you with many home horticulture problems. http://cesacramento.ucanr.edu/
