Friday, September 28, 2012
Wood grain pattern at the graft union
Interestingly, this tree wound has revealed the wood growth patterns of the tree's graft union. In a previous post, I have shown you what a graft union looks like from the inside (a cross section through the wood). With the bark removed from one side of this tree, we can now see the wood of a graft union from the outside. Note the raised ridge of wood that runs horizontally across the trunk. The color of the exposed and weathered wood is lighter above the graft than below.