KOS wrote:

trunk split,, tree company tied it together with string to hold, say
they can nail it back... will this work? i was not familiar with this
technique, i thought that since the trunk was split there was no way
to fix.. is this something I can do myself? They want close to 300
bucks to do this. thanks

It would be useful to see a picture, and a more detailed description
(size of the tree), but yes, if handy you can do this yourself, and
the sooner the better. Be careful not to devise anything that can
girdle the trunk. I repaired a young forest pansy redbud two years
ago, with two 10-32 bolts, it's healing nicely but will need a few
more years... the bolts will remain.

http://www.gardeningblog.net/2009/12...m-wind-damage/

http://www.ehow.com/how_4836852_repair-split-tree.html