What a nice idea!
You are too far from me (Middlesex County) to get involved, but I wonder if anyone in your group would be interested in one or two butterfly bushes that I could give you if you came here and dug it up. One is small about two feet high, the other is about 3-4 feet high. The former is an unusual blue-teal color, the second is purple.
I have nowhere to put them, they are currently in a vacant lot at the Community Garden where I garden, but if someone takes this plot, then I'm afraid they may be history.

ellen

PS - if interested, pls e-mail me off list, in case I forget to check back here.

thanks for the offer, I'll try to keep it in mind if someone comes down from your area. Down here along the river they have escape into the wild which is a bit of concern, but they sure are good in bringing in the butterflies.