Maybe, but we're doing it.
At the end of this post is a guide full of relevant links showing how you can do this yourself. We've also told our story using pictures at this Flickr page. Next to those pictures are similar instructions on how to do this .
Our experience has shown that this process has other benefits, namely that it builds connections in a fragmented social/political landscape. If you're trying to organize people, it's got a lot of potential. A big selling point is that it is something that can be done by individuals. You don't need to appeal for funding, attend planning meetings, or hire a budget busting number of "professionals".
If nothing else, you'll get some great tomatoes out of it.