The production of resin by trees is of vital importance to their very existence and continued well-being. Resinous deposits oozing and covering wounds provide a flush for sanitation and cover the injury from harmful insects and disease invasion. It is also thought that the sealing effect of resin retards water loss from plants and prevents further decay at the site of an injury.
Tree resins are also useful in manufacturing. They have been used by humans for millennia, being found in the form of preservatives in Egyptian tombs and varnish on ancient oriental art. Modern uses for plant resins include adhesives, varnish, medicines and aromatics.
Find out more about how resins both protect and increase the value of trees: