A good dose of annual precipitation helps to support many types of plants, including seagrass and various reeds at the smaller end of the spectrum to the gigantic Wye Oak, a huge example of white oak, the state tree, which can grow in excess of 70 feet (21 m) tall.
It ranges from sandy dunes dotted with seagrass in the east, to low marshlands teeming with wildlife and large bald cypress near the Chesapeake Bay, to gently rolling hills of oak forests in the Piedmont Region, and pine groves in the Maryland mountains to the west.
Maryland is bounded on its north by Pennsylvania, on its west by West Virginia, on its east by Delaware and the Atlantic Ocean, and on its south, across the Potomac River, by West Virginia and Virginia.
Maryland has shale formations containing natural gas, where fracking is theoretically possible.
As is typical of states on the East Coast, Maryland's plant life is abundant and healthy.
This geographical curiosity makes Maryland the narrowest state, bordered by the Mason–Dixon line to the north, and the northwards-arching Potomac River to the south.
Portions of Maryland are included in various official and unofficial geographic regions.
Included among these are the crape myrtle, Italian cypress, southern magnolia, live oak in the warmer parts of the state, USDA plant hardiness zones in the state range from Zones 5 and 6 in the extreme western part of the state to Zone 7 in the central part, and Zone 8 around the southern part of the coast, the bay area, and parts of metropolitan Baltimore.
Maryland's state flower, the black-eyed susan, grows in abundance in wild flower groups throughout the state.
The state's largest city is Baltimore, and its capital is Annapolis.
Among its occasional nicknames are Old Line State, the Free State, and the Chesapeake Bay State.
The mid-portion of this border is interrupted by Washington, D.