American Hornbeam

Carpinus caroliniana (kar-PINE-us kair-oh-lin-ee-AN-uh)

Family: Betulaceae Native Understory (15-40 ft)

American hornbeam is a deciduous tree in the birch family (Betulaceae) native to eastern North America. It can be found naturally in areas with moist soil, including streambanks, riverbanks and maritime forests. The common name musclewood comes from the appearance of the smooth bark over branches with sinewy fluting that resembles muscles. The species epithet is Latin for “Carolinian.” Plant in sandy or clay loams with high organic matter, regular moisture and slightly acidic soils. American hornbeam does well in heavy shade and is found as an understory tree in forests. It is difficult to transplant and is best moved in the spring. This plant is moderately resistant to damage from deer but is especially sensitive to drought, heat and soil compaction. This medium-sized tree may grow slowly 20 to 30 feet tall and 20 to 35 feet wide. The leaves are alternate with a doubly toothed margin and turn an attractive orange-red color in the fall. In early spring, yellow-green, male and fuzzy, yellow-green, female flowers mature. The small tree produces a small, ribbed nutlet that is carried by a 3-lobed leafy bract. The American hornbeam is a short, stubby tree that can have one or more trunks, each a foot wide and aesthetically pleasing. The bark is gray, thin, fairly smooth, and heavily fluted. The extremely hard wood of this tree will, as the common name suggests, take a horn-like polish and was once used by early Americans to make bowls, tool handles, and ox yokes. Commercial use of hornbeam wood is not practical, however, due to the limited amount of wood per tree. Use this adaptable tree in naturalized areas or along streams or ponds, as well as in urban settings. This is a wildlife-friendly tree perfect for a pollinator, children's or native garden, acting as a larval host plant, food source for mammals and birds and a cover plant. It is tolerant of some sun, wind and periodic flooding, making it a candidate for a rain garden. Quick ID Hints : alternate leaves, simple older bark is slate gray with a muscled appearance leaves weakly doubly serrate, parallel veins fruits a nutlet bearing a 3-lobed bract Insects, Diseases, or Other Plant Problems: Leaf spots, cankers, and twig blight are occasional disease problems of the American hornbeam.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 65 attributes.