A Different Kind of Gardening

My in-laws have been doing this for a bazillion years! They live on the Patapsco River in Maryland, prime oyster land. They also use the shells for compost. I think some areas around here also use ground oyster shells in making pavements. We are having a real oyster shortage, though. Also, it's a weird thing... they have discovered that natural (not farm raised) oysters seem to like the MOST polluted areas of Norfork, Virginia! So, they are thriving there, but you can't eat them! A little Darwinism, anyone?

wow , i never heard of that either