The Eastern Red Cedar (Juniperus virginiana L.) is a relatively abundant tree in the Cumberland Plateau region of the southeastern United States. It is a commercially important tree for lumber as well as fragrance. Both wood and leaves are rich in terpene-derived natural products. Volatile oil from wood of J. virginiana, made up chiefly of cedrene (a terpene) and cedral (Runenberg 1960), has been used in perfumery (Ter Heide et al. 1988) and as an insect repellent (Yasuo et al. 1987), and the thickened oil has been used in microscopy as a clearing agent and for use with immersion lenses (Merck Index 1989). Leaf oil of J. virginiana has been found to contain mainly sabinene, as well as limonene, a-pinene, y-terpinene, terpinolene, 3-carene, myrcene, 4-terpineol, citronellol, elemol, eudesmol, and the aromatic ethers estragole, safrole, methyl eugenol, and elemicin (Vinutha and von Rudloff 1968).