Hemlock borer requires a stressed or weakened host. The two major causes of stress for hemlock are defoliation and drought. Susceptibility to drought results from the fact that this conifer is very shallow-rooted and typically does best on moist-to-wet sites. The species is so sensitive to changes in soil moisture conditions that merely opening up… Read More Hemlock Borer
Chalara fraxinea is being treated as a quarantine pest under UK national emergency measures; it is important to report any suspected cases. The disease caused by the Chalara fraxinea fungus results in leaf loss and crown dieback in ash trees, which can lead to tree death in affected trees. Ash trees suffering with symptoms from… Read More Chalara Dieback of Ash (Chalara fraxinea)
Chalara Dieback of Ash (Chalara fraxinea) Read More »
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