Canadian Forest Service Publications
L'agrile du frêne : combattre pour ne pas abattre. 2010. Lavallée, R. Ressources naturelles Canada, Service canadien des forêts, Centre de foresterie des Laurentides, Quebec, QC. L'Éclaircie, No. 58. 2 p.
Issued by: Laurentian Forestry Centre
Catalog ID: 31745
Series: Branching Out (LFC - Québec)
CFS Availability: PDF (download)
Woodpecker activity on ash trees in the winter may not seem worrisome; however, it may be a sign that a beetle is hiding under the bark. Could it be the emerald ash borer?
Also available under the title:
Protecting ash trees from the emerald ash borer. Branching out from the Canadian Forest Service, Laurentian Forestry Centre. No. 58. (Updated version available. See Branching out No. 75) (English)