Mexican Oregano, Puerto Rican Oregano (Lippia graveolens)

Mexican oregano (Lippia graveolens), also called Puerto Rican oregano, is a woody, aromatic shrub native to Mexico, the southwestern U.S., and Central America. A member of the Verbenaceae family, it's the primary "oregano" in Mexican and Tex-Mex cuisine—distinct from Mediterranean oregano (Origanum vulgare).

Description

Open, branching shrub 3–5 feet tall. Leaves are small, ovate, rough-textured, gray-green, highly aromatic. Flowers are tiny, white, in small spikes. Flavor is pungent, earthy, with citrus and licorice notes—stronger than Mediterranean oregano.

Growing Conditions

• Zones: 9–11 (root-hardy to zone 8 with mulch).
• Light: Full sun.
• Soil: Well-drained, alkaline to neutral, gritty. Thrives in poor soil.
• Water: Low; very drought-tolerant once established.
• Temperature: Heat-loving; cold-sensitive.

Care & Maintenance

Prune lightly to shape. Harvest stems before flowering for best flavor. Dry in shade. No fertilizer needed. Propagate from cuttings or seed.

Uses

Mexican, Tex-Mex, Central American cuisines: salsas, moles, beans, meats, marinades. Medicinal tea. Xeriscape shrub. Butterfly nectar plant.

Potential Issues

Root rot in wet soil. Few pests. Cold damage. Flavor intensity varies with soil and climate.

The authentic oregano for Mexican cooking—tough, drought-proof, and flavorful.