Holy Basil (Ocimum tenuiflorum)

Holy Basil

Ocimum tenuiflorum

Its aromatic leaves carry warm, spicy notes, a sacred herb of wellness. Aromatic perennial herb; common names: Tulsi, Holy Basil.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerate 4 hours of direct sun daily; avoid intense midday sun in hot climates
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Watering Water when top 2 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm temperatures; protect from frost below 10°C; stop growth if temperatures drop below 15°C
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Characteristics

  • Leaf: Oval, slightly serrated leaves with fuzzy texture and strong aromatic scent
  • Flower: Small, pale purple to white tubular flowers arranged in terminal spikes
  • Stem: Square, green to purplish stems with fine trichomes
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; mist leaves occasionally to boost humidity

Fertilization

Diluted balanced feed every 2 weeks. Discontinue fertilization in autumn and winter when growth slows

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Pinch back growing tips regularly to encourage bushy, compact growth
  • Remove spent flower spikes to prolong blooming period
  • Trim yellowing or damaged leaves to maintain plant health and airflow
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no adverse effects from ingestion

Humans: No known toxic effects; safe for culinary and medicinal use

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Garden Uses & Culture

Culture: Sacred in Hinduism; used in traditional Ayurvedic medicine for wellness rituals

Usage: Culinary herb for teas, curries, and infusions; ornamental pollinator attractor