fullplate, thanks for the reminder. About 40 people in attendance.
The rose stem girdler, a small beetle, was a topic; a dead specimen and some damaged canes were presented. Spray timing was critical. For a large research plot, the plot edges were the most affected. A local grower described an entire row of caneberries toppled and Black Diamond plantings completely damaged for 4 years running until the correct ID and spray timing was made this year.
SWD: Pending patents and release (2019-2020) are a spray-on for fruit skin toughening and an artificial fruit attractant for use as a decoy. I think both of these products would not be well suited to the home gardener, would require heavy-duty spray equipment. There is also a native parasitic wasp “Samurai Wasp” that can be effective. But for the home gardener, it might be similar to buying ladybugs and watching them fly away. Imported parasite use is still awaiting approval.
A small container of ~200 wasps was presented; each wasp is slightly larger than one SWD fly.