WSU Master Gardener Bob Cain will discuss the application, timing, dosages and limitations of dormant and summer oils to control fungi, bacteria and insect pests and eggs in home orchards at 10 a.m. Saturday, Sept. 26, at the Master Gardeners’ Demonstration Garden, 2711 Woodcock Road, Sequim.

Recent research from WSU on the use of botanically derived oils also will be covered, including recommendations on specific brands as well as specific application to pest and disease control. This will include the use of natural insecticides and organic fungicidal oils.

Cain, a Master Gardener since 2009, has 40 years of experience growing vegetables in Scotland, Ireland, Colorado and Washington. He writes a monthly article on plant disease for the Clallam County Master Gardener Newsletter and is a frequent contributor to local newspaper gardening columns.

He is the 2009 Master Gardener Intern of the Year and 2011 Master Gardener of the Year. He served as the garden manager of the Woodcock Demonstration Garden for five years and is a past president and board member of the Master Gardener Foundation of Clallam County.

The presentation is the last Class Act at Woodcock Garden lecture for 2015, sponsored by the Master Gardener Foundation of Clallam County. The series will resume in 2016.

Cain will repeat this presentation for the Green Thumb Garden Tips Brown Bag at noon Nov. 12 at the Clallam County Courthouse. For questions, call 417-2279.