Coastal Plain Bogs When most people think of bogs, they think of huge quaking mats of sphagnum moss surrounded by evergreens in the far North ... or of the vast wet moors of northern Europe. Few Marylanders realize that we have a number of small bogs right here on our Coastal Plain. These unusual wetlands are important and threatened in our state. Bogs are open, acidic, nutrient-poor wetlands ...