The Herbarium
Part XII · Lookalikes
Field pair
Tulsi for pesto
Sweet basil and Holy basil — take this sheet to the bed, not a guess to the kettle.
Easy to confuseKitchen
Tulsi for pesto
Sweet basil and holy basil are both Ocimum, and both are food — but tulsi is a different chemistry and a different kettle. Recipes are not interchangeable.
Sweet basil is tender, glossy, and clove-anise. Holy basil (tulsi) is sharper, often purple-tinged, with a camphor edge. Name the plant before you dose a tea as if it were pesto.
The Herbarium — a teaching catalog, not a clinic. Traditional use is history, not a prescription. USDA 6b dates are a week either way, not a promise. Do not eat, drink, or harvest a plant you cannot name.