Its always nice to see some "locals" on the board. Welcome, and sure I'd be glad to offer advice where I can, maybe you can advise me as well. I think I may have been wrong about it being called "American Hawthorn" as it appears to have a European Origin.
I thought I'd post some links on Hawthorn, I find reading up on specific natural browse species, helps me immensely in deciding which trees to leave, how to fertilize, etc.
http://www.indianspringherbs.com/Hawthorn.htm
http://www.globalherbalsupplies.com/...n_pictures.htm
http://www.caes.state.ct.us/FactShee...y/fspp010f.htm
http://www.2020site.org/trees/hawthorn.html
http://www.controverscial.com/Hawthorn.htm