Technical reports

  • All 320
  • Environmental factors and damage 50
  • Fertilization and soil management 34
  • General information 106
  • Insects and pests 82
  • Plant health care 91
  • Tree diseases 81
  • Tree management and consulting 15

Dothistroma needle blight of pines

Canada, Great Britain, Ireland, United States

Dothistroma needle blight (DNB), also known as red band needle blight, is a serious disease of pines. It is caused by…

Douglas-fir beetle

Canada, Great Britain, Ireland, United States

The Douglas fir bark beetle is the most destructive insect pest of Douglas fir, and is the only bark beetle that atta…

Drought and landscape plants

Canada, United States

Moisture deficiency is the most common stress encountered in the landscape. Usually, this is a temporary condition an…

Dutch elm disease technical report

Canada, Great Britain, Ireland, United States

Dutch elm disease is one of the most well-known plant diseases in the world. The close relationship between the funga…

White pine (Pinus strobus) is a native forest species with many cultural problems that arise because it is not genera…

Eastern white pine (Pinus strobus) is one of the most beautiful native pines in North America. It is commonl…

Elm zigzag sawfly

Canada, United States

Elm zigzag sawfly (EZS), Aproceros leucopoda, is an invasive insect pest from East Asia that exclusively feeds on elm…

Elongate hemlock scale

Canada, Great Britain, Ireland, United States

Elongate hemlock scale, sometimes called fiorinia scale, is a significant pest of hemlock in its invaded range in eas…

Emerald Ash Borer

Canada, Great Britain, Ireland, United States

Emerald ash borer was first discovered in southeastern Michigan in 2002. Accidentally introduced on solid wood packin…

Emerging pests of Arbutus

Canada, Great Britain, Ireland, United States

Strawberry trees, or ornamental varieties in the genus Arbutus (A. unedo and Arbutus x ‘Marin…