I would imagine it would depend on how clean the staves are. Some of the great woods can tolerate all sorts of nasties where some of the more fussy woods like to be very clean.
For those of you who have problems with the search engines in forums why not use google to search through a specific site only? Its very easy and much more powerful than a standard in-built forum based search engine.
Very simply in a standard google search box just enter the text you want to search for followed by "site:www.primitivearcher.com"
This "site:" tells google you are only interested in results from a specific website.
So for instance, and dont put the quotes in
"pear site:www.primitivearcher.com"
or
"bradford pear site:www.primitivearcher.com"
Simples