Could you make a garden kind of like this:
with planter boxes on the railings?
Melissa, I think you should check out this blog: http://funkyjunkinteriors.blogspot.com/ you might find some cool ideas. Donna shares tons of re-purposed projects.
@Mickey B. & Boo Boo Right? She's on Hometalk, too1 Check her out @FunkyJunk Interiors - Donna - you'll love her stuff!