Fill oak cavities

Eric Nolan atreeboy at
Wed Dec 3 17:34:43 EST 1997

The International Society of Arboriculture does not recommend filling
cavities anymore because:
1) More current research shows that filling cavities may do more harm than
2) Decay develops between the interface between the filler and the tree.
3) The fill material does not strengthen and support the tree as much as
the new callus growth that develops around and over the wound.

Kim Anderson wrote:

> I have read that cavities should be clean out and filled with concrete
> (see  what is the current
> thinking about this?

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