Threats to Trees

Threats to Trees2013-10-22 13.31.38

Tree Topping

Here is an excellent summary of “Why Topping Hurts Trees” by the International Society of Arboriculture.

Another good publication from the Virginia Cooperative Extension, “A Guide to Successful Pruning:Stop Topping Trees!”

  • Stresses Trees by removing the leaf-bearing crown
  • Leads to decay
  • Can lead to sunburn
  • Development of weak shoots can create a hazard
  • Mutilated branches are UGLY
  • Can be expensive
Human Error
  • Improper Planting, Watering
  • Volcano Mulching
  • Pruning Mistakes
  • Root Damage
  • Construction      
Environmental Conditions
  • Drought or Floods
  • Fire
  • Lightning   
Insects

Examples of insects in our region and information about them:

   Emerald Ash Borer 

   Gypsy Moth

   Hemlock Wooly Adegid

   Southern Pine Beetle   

Diseases

  Oak Wilt

Invasives

Invasive Species of Trees in Virginia

  •  Chinaberrytree (Melia azadarach)
  •  Princesstree, Paulownia (Paulownia tomentosa)
  •  Russian Olive (Elaeagnus angustifolia) 
  •  Silktree, Mimosa (Albizia julibrissin)
  •  Tree-of-Heaven (Ailanthus altissima)

Click here for more information about non-native invasive plants (shrubs, vines, grasses, etc.) of southern forests.