The first step in pest and disease control is the identification of tree species. Tree diseases and pests vary across species so it’s critical to correctly identify the tree species. Identifying plant species is also a legal requirement before applying pesticides.
Plant health problems can be divided into two categories – living and non-living. Non-living causes can be anything from moisture and temperature extremes, machine damage or poor soil. They are non-infections. Living causes include viruses, bacteria, fungi, phytoplasmas, nematodes and parasitic plants. It is important to quickly diagnose living causes of tree problems as they can be infectious and spread rapidly. We have seen the devastation that has been caused to Ontario’s trees from the Emerald Ash Borer, for example.
Please contact a qualified, certified arborist as soon as you notice any signs of pests or diseases in your trees.