Sealant for Tree

Question

In our local park, there is a large gum tree. The top 2/3 has died back. The bottom 1/3 is growing well. If I cut off the top, there will be a large area (say 2 ft radius) exposed to the elements. I feel it should probably be sealed to avoid further damage to the tree. What should I use to seal the area? The local council is not interested in doing anything.

Answer 1

You should not seal the area. This can actually trap disease into the wound and harm the tree further. What you can do it treat the wound with a fungicide. This will help to kill some of the possible diseases that could harm the tree while the wound heals.