Hi! I live in a rowhouse in Baltimore and I'd like to get a small garden started with herbs and whatnot. I have little room in my backyard and it doesn't get much sunlight anyway. My thought was to configure something small that I could build onto the rail of my rooftop deck...like a teeny greenhouse. I need something more structural than just pots because the winds can get pretty rough here. But the heat and sun on the deck should be great.

Any ideas on designs for something like this? I'm a noobie gardener so use little words and speak slow...