Shelving is generally something that you attach to the interior of your greenhouse walls or lay on top of the built-in framing. Shelves, workbenches, and potting benches are necessary in order to make the best use of your greenhouse space. Learn more about your options in our article! Greenhouse Shelving Ideas to Optimize Space | Greenhouse Please note: You are currently browsing img 17 best images about patio ideas on pinterest pallet that is 597x800px in size. This image is listed in garden shelf ideas category. Greenhouse Shelving Ideas to Optimize Space Greenhouse, 597x800 in 114.31 KB.