The White Oak holds a special place in Maryland’s natural and historical identity, officially recognized as the state tree for more than eight decades.
According to the Maryland State Archives, Maryland designated the White Oak (Quercus alba) as its official state tree in 1941, through Chapter 731 of the Acts of 1941. The decision honored a tree species that is both widespread across the state and deeply tied to Maryland’s history. The most famous example of the species was the Wye Oak in Wye Mills, once considered one of the oldest and largest white oaks in the country before it fell in 2002.
Named for its pale, whitish bark and gray twigs, the white oak is known for its strength, longevity, and slow growth. These trees commonly reach 60 to 150 feet in height and can grow three to four feet in diameter. Their glossy, bright green leaves feature five to seven rounded lobes, a defining characteristic of the species. White oaks are found throughout Maryland, thriving in forests, parks, and open landscapes across the state.
White oaks typically begin producing acorns around 50 years of age and can yield up to 10,000 acorns annually. The acorns, topped with shallow caps that are smooth underneath, sprout soon after falling. Unlike many other oak species, white oak acorns are relatively sweet, making them an important food source for more than 80 species of birds and mammals. Native Americans historically ground the acorns into flour, a practice later adopted by early European settlers.
Beyond their ecological importance, white oaks have long been valued for their high-quality hardwood. The wood’s fine, nearly watertight grain makes it especially well-suited for barrel staves, including those used for aging wine and whiskey, as well as furniture and other durable wood products.
