Collar rot is a symptomatically described disease that is usually caused by any one of various fungal and oomycete plant pathogens. It is present where the pathogen causes a lesion localized at or about the collet between the stem and the root.

How do you treat collar rot?

Tips on Treating Collar Rot In already established areas, you can scrape soil away from the base of the tree and gently scrape the surface of the infected area. Leave it open to dry. Fungicide is the most common method recommended to combat the disease.

What does collar rot do?

Root rot, crown rot, collar rot, and damping-off are all types of plant diseases that may be caused by soil borne pathogens. These diseases impact plant health, causing plant tissues to soften, collapse and rot, leaving them unable to perform regular functions. If left untreated, it can lead to plant death.