The Druids recognized portents struggle intuitively in the formation of the blackthorn tree's growth. This tree has some wicked thorns that are ominous looking at best. Indeed, when cut by these thorns the human flesh can turn septic fairly rapidly.
In autumn it turns a sulphurous yellow and when these leaves drop they expose a contorted body. This mangled imagery brought the concept of strife and suffering to the Celtic mind. These visual observations made the blackthorn a symbol of the other half of life that we often shrink back from.
When the blackthorn showed itself in Ogham oracle practices, it could be considered as a portent of war, illness or discouragement. It was a sign to get ready and brace yourself...<<