Signs of an Unhappy Tree and How to Help Them
/“When is a tree unhealthy? The simple answer is when symptoms are observed in the crown, on the foliage or on stems (shoots, branches, trunks).
The detection of ill health depends on the initial recognition of symptoms. Some symptoms are easy to identify, for example wilted leaves and stems with cankers, but others are not and may be difficult to distinguish from events that occur in the normal cycle of growth. Many trees drop their leaves and stop growing during winter or dry seasons. It is therefore important to understand the tree's normal pattern of growth throughout the year and from one year to the next, according to prevailing conditions at particular sites.” (FAO.org)
In general there are several changes you can look for if you suspect your tree is ill. (Tree Care Industry Association)
Poor structure
Decay
Weak unions or joints
Cracks
Cankers
Deadwood
So now that you know how to spot an unhappy tree, it’s important to figure out how your tree became unhealthy so you can prevent any further decline. “Trees are long-lived and over a period of years may be subject to insect attack, disease, adverse weather conditions, and other environmental effects. These are often called “stress factors” and alone or collectively reduce growth and may cause dieback of the tree. The root system is especially vulnerable to changes in the soil environment. Soil compaction, changes in drainage, soil fill over the root system, mechanical damage to roots from trenching, and excess salt accumulation are examples of stress factors affecting root systems.” (Purdue University)
If you notice a tree declining in health, make sure you are watering appropriately, adding mulch, add light amounts of fertilization, and prune where needed. “Where possible, determine specific cause or causes of the condition and take appropriate control steps. It is advisable to have a competent arborist or nurseryman check the tree for problems such as girdling roots, unfavorable soil pH, and damage by borer-type insects. There are no miracle cures for trees suffering from decline, just patience and proper attention and care.” (Purdue University)
Browning Tree Service is a proud member of Indiana Arborist Association and International Society of Arboriculture, serving the West Lafayette and Lafayette, Indiana area!
Resources:
http://www.fao.org/3/y5041e/y5041e07.htm#TopOfPage
https://www.tcia.org/TCIA/Blog_Items/2014/What_To_Do_When_Your_Tree_Is_Dying.aspx
