California Bay Laurel (Umbellularia californica): Aromatic Western Native

California Bay Laurel, also known as California Laurel, Oregon Myrtle, or Headache Tree, is a broadleaf evergreen tree native to the coastal ranges of California and southwestern Oregon. Umbellularia californica is the sole species in its genus and fills a unique ecological niche in western forests, valued for its aromatic foliage, beautiful wood, and wildlife benefits.

Distinctive Characteristics

This tree typically reaches 30-80 feet in cultivation (taller in ideal wild conditions) with a dense, rounded crown. The lance-shaped leaves are 3-5 inches long, glossy dark green above and paler beneath, and intensely aromatic when crushed—reminiscent of culinary bay leaf but much stronger. The small, yellow-green flowers appear in late winter to early spring, followed by olive-like purple fruits (drupes) that ripen in fall.

Taxonomic Classification

Uses and Cultural Significance

The "Headache Tree" moniker comes from the potent volatile oils in the leaves, which can cause headaches in sensitive individuals when inhaled in quantity. However, Indigenous peoples and early settlers used the leaves as a flavoring (sparingly) and for medicinal purposes. The fruits were roasted and eaten.

The wood is highly prized—dense, fine-grained, and beautifully figured with colors ranging from golden brown to gray with dark streaks. Known commercially as "Oregon Myrtle" or "Myrtlewood," it's used for fine furniture, cabinetry, turned bowls, and musical instruments. In landscaping, California Bay Laurel serves as a shade tree, screen, or specimen in native and Mediterranean gardens. It prefers partial shade to full sun and well-drained soil, with moderate water needs.