American Basil (Ocimum americanum)

American Basil

Ocimum americanum

Aromatic, zesty herb with bright foliage that lifts any dish. Annual culinary herb; common names: lime basil, American basil.

Full sun
2–3/week
Beginner
🌱

Plant Needs

☀️
Sunlight Thrives in full sun to partial shade; provide midday shade in extremely hot climates to prevent leaf scorch
💧
Watering Water when the top 2 cm of soil feels dry; avoid overwatering to prevent root rot
🌡️
Temperature Prefers warm temperatures between 20–30°C; cannot tolerate frost or temperatures below 10°C
🔍

Characteristics

  • Leaf: Small, ovate to lanceolate bright green leaves with a distinct lime-like aroma
  • Flower: Tiny white to pale purple tubular flowers arranged in dense terminal spikes
  • Stem: Square, green, finely hairy stems characteristic of the mint family
🛠️

Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Feed with diluted organic fertilizer every 2 weeks. Avoid over-fertilizing to prevent bitter-tasting leaves

Banana peel fertilizer tea:Soak chopped banana peels in water for 24 hours; dilute 1:10 before applying to soil to support leaf growth and overall plant health
Pruning
  • Pinch back growing tips regularly to encourage bushier, fuller growth
  • Remove spent flower spikes to prolong foliage production for culinary use
  • Trim yellow or damaged leaves to maintain plant health and airflow
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic; no adverse effects reported

Humans: Non-toxic; safe for culinary consumption and topical use

📖

Garden Uses & Culture

Culture: N/A

Usage: Culinary herb for flavoring salads, teas, curries, and marinades; aromatic ornamental that attracts pollinators