It does occur somewhat sporadically on the same property, Little Hawk, depending on microclimate. There are at least a hundred cedars on our property and some make it through the summer with no flagging at all, while others look very troubled indeed, by the end of the summer.

It is probably more common along roadsides, because cedars are very shallow rooted and the road side of the tree would be very exposed to drying winds and direct sun, while those further from the road, have more protection from the affects of desiccation of their root systems.

Susan (who used to be a Park Naturalist too), however, second opinions are often wise.