Old-Growth Forest

The floodplain of the Congaree River supports one of the tallest deciduous forests in the world, with a canopy that soars high overhead. Among the giants are enormous bald cypress, whose swollen trunks and protruding knees are built for the wet ground, along with towering loblolly pines, sweetgums, oaks, and tupelos.

Congaree is known for its many record-setting and champion trees, some among the largest of their species anywhere. Standing beneath them, with the trunks rising like columns and the canopy far above, gives a powerful sense of the scale and age of this rare old-growth forest.

The secret to Congaree's towering forest is flooding. Several times a year, the Congaree River overflows its banks and spreads across the floodplain, carrying nutrient-rich sediment that renews the soil and nourishes the trees. This regular flooding, rather than harming the forest, is what allows it to grow so tall and lush.

The forest survived into modern times because the wet, flood-prone land was difficult to log, sparing these giants when so many other Southern forests were cleared. Today it is protected within the national park, and visitors can experience it on the Boardwalk Loop and the network of hiking trails that wind among the trees.

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Congaree National Park protects one of the largest remaining tracts of old-growth bottomland hardwood forest in the southeastern United States, a forest that was never cleared. It is home to some of the tallest trees in the East and one of the tallest deciduous forest canopies in the world, with towering bald cypress, giant loblolly pines, and numerous record-setting champion trees. The forest grows so tall because the Congaree River regularly floods the floodplain, delivering nutrient-rich sediment that fuels remarkable growth. Walking among these giants offers a rare glimpse of what the ancient forests of the South once looked like, which is why the area is protected. It is the living heart of the park.

The trees at Congaree grow exceptionally tall because of the regular flooding of the Congaree River. Several times a year, the river overflows its banks and spreads across the floodplain, carrying nutrient-rich sediment that renews the soil and nourishes the forest. Rather than harming the trees, this flooding is exactly what allows them to grow so large and lush, creating one of the tallest deciduous forest canopies in the world. The forest also survived into modern times because the wet, flood-prone land was hard to log, sparing these giants when many other Southern forests were cleared for timber. The combination of rich, flood-fed soil and protection from logging produced the towering old-growth forest visitors see today.

Congaree's old-growth floodplain forest contains a rich variety of trees. The bald cypress are especially distinctive, with their swollen, buttressed trunks and the woody knees that poke up from the wet ground, and the towering loblolly pines, some of which are record-setting in size. The forest also includes water tupelo, sweetgum, various oaks, hickories, elms, and many other hardwoods adapted to the periodically flooded ground. Congaree is famous for its champion trees, individuals that are among the largest known of their species. This diversity of towering trees, thriving in the nutrient-rich, flood-fed floodplain, is what gives the park its remarkable, cathedral-like forest that visitors can explore on the boardwalk and trails.

The easiest way to experience Congaree's old-growth forest is the Boardwalk Loop Trail, a 2.4-mile elevated walkway from the visitor center that carries you dry-footed among the towering cypress and pines. For a deeper experience, the park has a network of hiking trails that wind farther into the floodplain forest, ranging from short walks to longer treks, some of which can be muddy or flooded depending on river levels. Paddling Cedar Creek offers yet another perspective, gliding among the giant trees from the water. Whichever way you choose, bring insect repellent in the warmer months and check current flooding conditions, since parts of the floodplain flood seasonally. Even a short boardwalk stroll lets you stand among some of the tallest trees in the East.