‘On the trail of Sirococcus tsugae’, Andy Gordon, Observatree volunteer

In July 2015, at an Observatree training session held at Keele University, Barnaby Wylder (Forestry Commission) showed volunteers a 10-15 year old  Cedrus atlantica glauca quite heavily infected with Sirococcus tsugae. The disease has been endemic in North America on Hemlock (Tsuga spp.) for many years but has only been observed in Europe, initially in … Read more