I've never seen one. It looks like they may grow north of here. I'm zone 8 which is just on the southern border of their growing zones.

This is a gorgeous tree in the early spring, and I really like the form. You are lucky to have it. I worked at a place that had one outside my building as a landscape specimen. I never saw any berries. Dogwoods seem to have boom and bust years, and not every other either. I have never seen anything in the way of berries. I debated about planting this in my yard, but I figured I wouldn't get a harvest. I didn't think about using it for pectin and mixing with other fruits! Great report Co!