North American Fruit Explorers mailing list at ibiblio

[Lucky Pittman <lucky.pittman@murraystate.edu>]

Here's the link for Tubex tree shelters - available in 3, 4, 5 ft lengths

http://www.treessentials.com/tubex.htm

I've used TreePro types in the past, but when I've tried to visit their 
website recently, I get an 'under maintenance' message.  They have, in the 
past, has lengths up to 6 ft.  I like them because they can be opened to do 
maintenance pruning/grass&weed removal, etc., but strongly recommend 
getting the 'vented' types to prevent 'baking' in hot summer temps and to 
improve hardening off of vigorous growth in late summer/fall.

http://www.treepro.com

While searching, I came across this site with more info on this sort of stuff:

http://www.lrconline.com/Extension_Notes_English/pdf/tr_shltrs.pdf

Lucky