Hi everyone! I need some help and ideas for my 6' x 6' greenhouse. We bought it as a kit in the spring and have only used it to start flower seedlings so far, but this winter we'd really like to grow any type of salad fixin's and herbs that we can. It resembles a gambrel roofed little shed. It's plastic/poly type of panels, has a vent in the top and is placed on a brick paver foundation. It's southern facing and has an electric outlet run to it. We are in southern Pennsylvania, zone 5. I welcome any and all advice from you expeirenced gardeners!