Can DC Grow?

I was driving around DC today, the upper half of Georgia Ave, and I noted a ton of local community gardens. I had to stop and take in the splendor and pride of all the local community gardens. I looked around and started to think of other parts could benefit from similar gardens.
When I got back to the office I did a quick search on the internet and found a great site called Garden Rant. The site is dedicated to some DC community gardens and is a wealth of information. Pictures, posts, and comment sections allow a black thumb to turn into a green thumb in weeks.
I think it’s a great idea for developers or community residents to try and build a garden wherever space will permit. The garden increases community spirit creates a place for community members to come together and helps turn otherwise vacant lots into something special.
Do you know of any great urban gardens around DC? Do you know any tricks to getting one started? Let us know.