There's a Ram's Horn in My Tree??
July 5, 2018
While it may seem like trees can completely heal their wounds, it's more accurate to say they "seal" their wounds; compartmentalizing them. We came across this textbook case of what we call a ram's horn when performing a recent tree removal. The tree had suffered previous damage and went about sealing off the damaged area.
"When a tree attempts to compartmentalize a damaged area along the trunk, as you can see on the left side of the trunk in the photo, the callus tissue begins to rub together and ultimately creates this formation that looks like a ram's horn," explained ISA Certified Arborist Scott Dahlberg.
Structural damage can be caused by improper pruning cuts, weather events such as lightning strikes, or run-ins with machinery and automobiles. Diseases affecting the tree could also trigger sealing efforts to protect the inner core of the tree. Over time, the ram's horn formation can occur as the tree tries to contain the damaged area.
Internal damage to a tree may not always be obvious to the naked untrained eye. As you can see from this ram's horn formation, there can be decay and dead matter lurking inside your tree, weakening it's structural integrity. It's always best to put your trees on a preventative care plan, where trained certified arborists can spot signs of trouble early on.