People forget about the internal barrier zone that's there and needs to be replenshed with good ole H
2O and nutrients.
Also I have heard it said that the 2nd wall of defense being the heartwood is just heartwood and has nothing special about it. Apparently it offers little defense other than it being aged and harder .... now that's not the entire picture is it?
Wall 2, the heartwood has a lot more to offer than being dead wood. Perhaps we expand on this so the wound painters and fungicide sprayers understand what is going on inside the tree where some changes are taking place as the tree is setting itself up for compartmentalizing the wound.
Roll out the big guns on this one ... altered heartwood and defense properties of heartwood.
