Q. How do I get a garden plot?
Your question is a commonly asked one, so it is in our Ask PHS system. I've copied the answer, below.
There is a Philadelphia community gardening locator map on the PHS web site. Use the link below titled "Philadelphia community gardening locator map" to find a community garden near you.
Another map of community gardens lives on the website of the American Community Gardening Association (see link below). This is a community gardening location database for the U.S. Enter your zip code into the search box for gardens near you. Also, you might check your local library, coffee shop, church, community center or food market bulletin boards for information on locations of community gardens.
For more information on community gardening, see the link to the resource guide below on this topic.
What you may also want to do is to visit a community garden you are interested in, at a time when there are people in the garden -- try Saturday morning -- and ask about joining.
Hope this helps!