See attached photo. We’d like to do a similar garden bed on our house. If you’ll notice the crawl space vents that are uncovered in the photo... would there be any harm in raising this flower bed more and covering the crawl space vents like the ones in the photo? There are other vents on the sides and back of the house that are uncovered. We live in Pensacola, FL (humid) and wondering if doing something like this would cause a terrible amount of moisture build up or if it’d be about the same. Thanks in advance for your advice!