What should cover the cambium layer in cut surface treatment of stumps?

In the treatment of cut surfaces on stumps, it is essential to protect the cambium layer to prevent disease and promote healthy regeneration. The cambium is a thin layer of actively growing tissue between the wood and the bark, and it is crucial for the development of new wood and bark.

Covering about one inch wide around the outer growth rings effectively protects the cambium layer. This area includes the cambium and provides a buffer zone that can further help prevent the ingress of pests and pathogens, ensuring the tree undergoes a healthy recovery process if it is intended to sprout or regenerate.

This approach balances providing adequate coverage while not excessively covering areas that do not need treatment, such as the inner wood of the stump, which is not involved in growing processes. The selected option safeguards the vital parts necessary for future growth while using resources efficiently, promoting the health of the remaining tree structure.