Got Nature? Blog

The cause of tree decline and death is often complex. Environmental stress may predispose the tree to be attacked by insects or diseases or kill the tree outright in events like drought or flooding. Exposure to herbicides or road salts can also cause damage or stress. Trees planted on sites that are unsuitable for their long-term growth needs may eventually show signs of decline and may die. Exotic pests or diseases can quickly kill trees that do not have natural resistance. Sometimes we may misinterpret natural cycles in a tree’s life for disease or death. White pine will often have many yellowing pine needles rapidly dropping in the fall. These needles are generally on the interior parts of the branches, and the color change and dropping is a natural occurrence. If you have health problems with your trees check out these resources: Phomopsis Dieback of Spruce, and Blue Spruce Update both publications from the Purdue Landscape Report, White Pine Decline in Indiana, The Education Store publication and how to contact a Certified Arborist.