Mexican Oregano (Lippia graveolens)

Mexican Oregano

Lippia graveolens

Aromatic foliage releases warm, earthy scent when crushed. Perennial subshrub; common name: Mexican Oregano.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in direct sunlight for most of the day; tolerates light shade in extreme heat
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Watering Allow top 2–3 cm of soil to dry between waterings; avoid overwatering to prevent root rot in poorly drained soil
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Temperature Tolerates mild frost down to 5°C; prefers warm, arid to semi-arid growing conditions
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Characteristics

  • Leaf: Small, ovate to lanceolate leaves with serrated margins; gray-green, fuzzy texture
  • Flower: Tiny white to pale lavender tubular flowers in dense terminal clusters
  • Stem: Woody, branching stems with grayish-brown bark as it matures
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Care Guide

Watering

Water deeply when topsoil is dry; increase frequency slightly during extreme heatwaves

Fertilization

Apply diluted balanced organic feed once monthly. Avoid over-fertilization to prevent leggy growth and reduced aromatic oil production

Composted coffee grounds tea:Steep fully composted coffee grounds in water for 24 hours; dilute 1:20 with water for root drench to avoid nutrient burn and odor issues
Pruning
  • Trim back leggy stems by one-third in early spring to encourage compact, bushy growth
  • Deadhead spent flower clusters regularly to promote continuous blooming throughout summer
  • Remove damaged, diseased, or yellowing foliage to maintain plant health and airflow
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse effects

Humans: No known toxic effects on humans; safe for culinary use

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Garden Uses & Culture

Culture: N/A

Usage: Culinary herb (substitute for Mediterranean oregano), ornamental ground cover, traditional medicinal use for digestive relief