Year of Publication
Since the 1990s, there has been an epidemic of SNC affecting hundreds of thousands of acres of coastal Douglas-fir forests in Oregon, Washington and British Columbia. This constitutes one of the largest foliage-disease epidemics of conifers in North America. SNC is also a localized problem in many inland areas of the west, especially in Montana, Idaho, British Columbia, Washington, and Oregon.
Mulvey RL, Shaw DC, Filip GM, Chastagner GA. Swiss Needle Cast. Swiss Needle Cast Cooperative; 2013.