The Cornus rugosa, also known as the Roundleaf Dogwood, is a deciduous tree native to parts of the United States and Canada. It grows up to 4 meters tall and has yellowish-green twigs with red or purple blotches. The plant prefers sandy, gravelly, or rocky slopes with well-drained to normal moisture soil. While shade-tolerant, it thrives in full sun. Roundleaf Dogwood produces white flowers in early summer, followed by blue to greenish-white drupe fruits that mature in October. The bark is used for medicinal purposes, known to be cathartic, febrifuge, and tonic. The plant is a host species for spring azure and gossamer wings and is eaten by various animals. It is easy to grow and is resistant to honey fungus. Plant enthusiasts seeking ornamental and free-flowering plants will find the Roundleaf Dogwood a desirable addition.