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Oregano (Origanum vulgare) — Wild Marjoram, Pot Marjoram
Materia Medica
Family: Lamiaceae
Common names: Oregano, wild marjoram, pot marjoram
Part used: Aerial parts (leaves and flowering tops)
Growth habit: Perennial herb
Primary tradition: Mediterranean culinary and folk use
Actions & Energetics
Warming and aromatic. Traditional actions include carminative, antimicrobial, and mild expectorant. The leaves are a major culinary herb. Energetically considered warming. Culinary and medicinal use overlap.
Botanical Description
A perennial herb with opposite oval leaves and clusters of small pink to purple flowers. It has a strong aromatic scent. Native to the Mediterranean and widely cultivated. The leaves and flowering tops are the primary parts used.
Name Confusion & Look-Alikes
True oregano is Origanum vulgare. It must be distinguished from other Origanum species and from marjoram (Origanum majorana). Correct identification of the strong aromatic leaves is important. Culinary oregano is typically Origanum vulgare.
Traditional Indications
Mediterranean culinary and folk use of the leaves for digestive support and as an aromatic. Oregano appears in traditional foods and mild respiratory formulas. Culinary use is primary and well established.
Preparations & Dosage
Fresh or dried leaves used as a culinary herb. Infusion of the dried herb. Essential oil is concentrated and used primarily externally or in aromatherapy. Culinary amounts are common and safe.
Classical Formulations
Oregano appears in traditional Mediterranean culinary and mild digestive formulas. It is primarily a culinary herb.
Constituents
Essential oil (including carvacrol and thymol), flavonoids, and phenolic acids. The volatile compounds are responsible for the characteristic aroma and much of the antimicrobial research interest. Content varies with growing conditions and harvest time.
Modern Research
Preclinical studies document antimicrobial activity of oregano essential oil. Human data for culinary use are limited beyond its established food safety. Culinary amounts are generally recognized as safe. Concentrated essential oil requires caution.
Adverse Effects
Culinary amounts are well tolerated. Concentrated essential oil can cause skin irritation or digestive upset. Allergic reactions are rare.
Interactions & Contraindications
Generally safe as a culinary herb. Caution with concentrated essential oil. No well-established serious drug interactions for culinary use.
Pregnancy & Breastfeeding
Culinary amounts are generally regarded as safe. Concentrated essential oil during pregnancy lacks sufficient safety data.
Habitat & Cultivation
Native to the Mediterranean and widely cultivated in temperate gardens. Prefers full sun and well-drained soil. Drought-tolerant once established. Grown commercially for culinary use and essential oil.
Propagation
Propagated by seed or by cuttings. Plants establish readily and can spread. Commercial cultivation is common.
Harvesting & Drying
Aerial parts are harvested just before or as flowering begins for best flavor. Dry promptly with good airflow. Store in airtight containers away from light.
Food Use
Oregano is a major culinary herb used worldwide in Mediterranean, Italian, and other cuisines. Fresh and dried leaves are common in cooking. Culinary use is the primary form.
History, Folklore & Spiritual Use
Oregano has a long history in Mediterranean cuisine and folk medicine. It is associated with warmth, digestion, and culinary tradition. The strong aromatic character is distinctive.
Materia Medica Summary
Oregano (Origanum vulgare) is a perennial herb whose aromatic leaves are a major culinary spice with traditional digestive use. Culinary amounts are safe and well established; concentrated essential oil is distinct. Educational information only.