Root rot is a serious condition affecting both indoor and outdoor plants and trees. It occurs in areas with poor water drainage where mold is able to form. In both indoor and outdoor plants and trees, root rot is typically lethal. Trees affected by the condition should be safely removed and destroyed. Here's how to tell if your trees are infected, and how to contain the damage.
What Does Root Rot Look Like?
The fungus that causes root rot penetrates the root through wounds in the lower parts of the tree, killing the cambium collar surrounding the root system. tree survey near me When the fungus spreads all the way through, it blocks vital nutrients and water from flowing up the trunk. If you suspect your tree has rot, look at the surrounding areas of the tree. A forest area with rot will display damage in a circular pattern that stems from a central location.
Symptoms of root rot include loss of growth, sparse foliage, chlorosis or discoloration of the typically green coloration of tree leaves, and wilting of leaves. In hardwood, dieback, or the rotting of the lower trunk, is also an indication of root rot.
What Causes Root Rot?
Overabundance of moisture is the underlying factor in rot, caused by members of the water mold genus Phytophthora. The most aggressive form of root rot is caused by P. cinnamomi. This condition often happens due to overwatering, making it more common in household plants and trees.

Areas with poor water drainage are dangerous to trees because the excess water makes it difficult for roots to get the air that they need. This causes them to decay. Spores from root rot causing agents can contaminate nearby plants and trees, but the rot will not take hold unless there is adequate moisture. These spores are not only airborne, but they can also be carried by insects and arthropods in the soil.
Though a plant with rot will not typically survive, it can sometimes be propagated so that it will not be lost completely. Trees with root rot are dangerous and should be safely removed. Seeking a certified tree professional can help you decide how to proceed to limit damage caused by root rot.
Once the fungus progresses enough to actually kill the tree, the trunk, leaves, and branches will become rotted. This provides a food source for even more rot causing spores to grow, typically in the form of a mushroom. From this point, spores become airborne and can spread to other trees in the immediate area. It can also be spread from root to root.
How to Avoid Root Rot
To avoid rot in your trees, only water tree and plant roots when soil becomes dry. Particularly heavy soils can also contribute to the condition as they can suffocate root systems. Check water drainage in your yard and make sure that soil and root systems can breathe.
Safe Tree Removal
One a tree has been infected, the best option is safe removal before it has a chance to spread to other healthy trees in your yard or forest area. Seeking the services of a certified, professional tree removal company is the safest and most efficient way to deal with the problem as they are trained to handle diseased tree removal. Look for a reputable company that is a member of the International Society of Arboriculture.