Fill oak cavities

[Don Staples]

Kim Anderson wrote:
> 
> I have read that cavities should be clean out and filled with concrete
> (see http://www.arborists.com/cavities.htm).  what is the current
> thinking about this?

Local oppinion is that it is unnecessary in most cases.  Exception being
if the structure needs reinforcment, i.e., a core to hold the tree to
gether.  
-- 
Don Staples
UIN 4653335

My Ego Stroke:  http://www.livingston.net/dstaples/