Hi there! I've read a number of posts asking for urban planting advice and asking where to get seedlings. Consider joining The Talking Farm. We are a volunteer effort in Evanston that seeks to reconnect locals with the land and teach people about raising organic produce. Come check out our outdoor classroom on an "as available" commitment or feel free to join us regularly.
You can find out more here:
http://www.thetalkingfarm.org/ At our minifarm, we'll be displaying a number of ways to grow: vertical gardening, vermicompost gardening, square foot gardening, container gardening and more.
Additionally, many of us are starting seedling (organic, heirloom and unusual varieties) that will be available for sale in May. Check it out!
Melina