Of all the native hickories, bitternut is the easiest to identify at any time of year: those long, sulfur-yellow buds are unmistakable even in the depths of winter, catching light on gray days with a warmth that seems almost deliberate. Native to North Carolina and much of eastern North America, Carya cordiformis reaches 50 to 100 feet in height with a broad, pyramidal crown, preferring moist, rich soils in open areas where it can find the sun it needs — shade is not tolerated. The tap root runs deep and strong, making established trees essentially immovable and making site selection at planting a commitment that may outlast the gardener.

The tree moves through the year with a quiet distinctiveness. It is late to leaf out in spring, and early to drop in autumn, but while the leaves are present they cast an open, filtered shade that allows lawn grass and understory plants to grow comfortably beneath. Fall color is a clean, honest yellow. The nuts are bitter and not suitable for human consumption, but they feed squirrels, turkeys, and other wildlife reliably. Individual trees have been documented living up to 200 years, though they do not produce nuts until at least 30 years old. Given the right open, moist site — a large yard, a naturalized area, a park — few native trees offer such longevity with such modest demands.