Lemon Thyme (Thymus citriodorus)

Lemon Thyme

Thymus citriodorus

Its citrusy aroma brightens herb gardens, a zesty culinary workhorse. Aromatic evergreen herb; common name: Lemon Thyme.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in bright, direct sunlight to maintain strong aroma and compact growth
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Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot in heavy soils
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Temperature Hardy to -10°C; prefers cool to temperate temperatures, tolerates mild summer heat with adequate drainage
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Characteristics

  • Leaf: Small, oval, glossy green leaves with a distinct lemon-scented aroma when crushed
  • Flower: Tiny pale purple to white tubular flowers arranged in dense terminal clusters
  • Stem: Woody, trailing or upright stems with fine, slightly hairy texture
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Care Guide

Watering

Water when top 2 cm of soil is completely dry

Fertilization

Apply diluted balanced liquid fertilizer once monthly. Use a low-nitrogen fertilizer to promote compact, aromatic growth

Eggshell powder top-dressing:Crush dried, rinsed eggshells into fine powder, sprinkle lightly on soil surface; avoid direct contact with plant stems to prevent irritation
Pruning
  • Trim back flowering stems immediately after bloom to encourage new, bushy growth
  • Remove yellow or dead foliage regularly to improve airflow and prevent disease
  • Harvest sprigs by cutting 1/3 of the plant at a time to maintain long-term plant health
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no adverse effects from ingestion or contact

Humans: Non-toxic to humans; safe for culinary and topical use in moderate amounts

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Garden Uses & Culture

Culture: In European folk traditions, lemon thyme was used to treat mild respiratory issues and symbolized courage

Usage: Culinary herb for seasoning savory dishes, teas, and infused oils; ornamental ground cover for rock gardens