Pittsburgh has got to be z6 or colder, right? You can surely grow in large pots, but without sinking them in the winter your success will be limited. In-ground plants will most likey do so much better, especially if you can give them some winter protection (bend culms to the ground and cover with tarp for winter).

Another place to check for bamboo exchanges or donations is the bambooweb forum.

Here is a link that might be useful: bambooweb forums

Thanks for the post.

The reason I'm planting them in the pots is that the will be on my deck to provide a natural screen to my neighbor's deck.