Tree diseases

  • All resources in tree diseases 256
  • Environmental factors and damage 117
  • Fertilization and soil management 3
  • General information 9
  • Insects and pests 122
  • Plant health care 171
  • Tree management and consulting 18

Powdery mildew on dogwood

Canada, United States

There are two fungal organisms, Microsphaera pulchra and Phyllactinia guttata, which cause powdery mildew on dogwoods…

Powdery mildew technical report

Canada, United States

Powdery mildew is a foliage disease, which occurs on virtually all species of ornamental plants. Rose, oak, hawthorn,…

Prevencion de la transmision de boxwood blight

Canada, Great Britain, Ireland, United States

El Boxwood blight es altamente contagioso y el patógeno del hongo puede ser lentamente esparcido atravez de he…

Rhizoctonia root rot

Canada, United States

Rhizoctonia root rot is a common fungal disease caused by various species in the genus <…

Rose rosette disease

Canada, Great Britain, Ireland, United States

Rose rosette is a highly destructive and lethal viral disease affecting all roses. Rose rosette disease (RRD), first …

Sanitation prevention of boxwood blight transmission

Canada, Great Britain, Ireland, United States

Boxwood blight is highly contagious and the fungal pathogen can be readily spread on contaminated tools, spray hose a…

Seiridium canker

Canada, Great Britain, Ireland, United States

Seiridium canker is a fungal disease that affects members of the plant families Cupressaceae and Taxodiaceae. In land…

Shot-hole disease of flowering cherry

Canada, Great Britain, Ireland, United States

Shot-hole disease pathogens cause some of the most common and damaging issues for ornamental flowering cherries. Whil…

Unfortunately, filling the cavity is not recommended and will provide no benefit. Depending on the extent of decay...

The tree grows these sprouts as a stress response, when there is a need for more leaf area (photosynthetic potential),...