Included Bark
/in-KLOO-ded bark/🌲 Arboriculture●● Intermediate
Also known as: ingrown bark, bark inclusion
Included bark occurs when two stems or a branch and trunk grow together with bark pressed between them rather than forming a strong branch union. The trapped bark acts as a wedge, preventing the formation of interlocking wood fibers. This creates a weak attachment point prone to failure, especially under wind or ice loads. It is one of the most common structural defects assessed in tree risk evaluations.
Etymology
From Latin includere (to shut in) + Old Norse bǫrkr (bark)
Example
“The V-shaped union showed signs of included bark, a structural weakness that could lead to failure in a storm.”