Gianni: Go to www.musserforests.com, and click on "deciduous screens". There you will find hybrid poplars. Musser is located in Pa., and is perhaps the largest general tree and shrub nursery in the east. Reliable people, and their prices are very good, especially in larger quantities. Rgds, Don Yellman, Great Falls, VA Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/