Perhaps not. Sapwood is living wood. As a tree grows, it produces chemical byproducts, some toxic. A tree is, after all, a living chemical factory. Like all chemical plants, there's a waste disposal problem. The solution is to pack the innermost sapwood cell layer with the waste, thus turning it into non-living heartwood. A new layer of sapwood cells grows just under the bark to replace them.Nanohedron wrote: I would never have guessed. But does it have the same resinous quality as the heartwood?
These toxins are what makes heartwood more rot and bug resistant, although that varies by species. If by 'resins' you mean allergens, its quite likely that will be much less in sapwood.
