Ocimum sanctum, commonly known as holy or sacred basil, tulasi or tulsi, is an aromatic perennial in zone 9 or an annual elsewhere.
Spicier than other basils, Tulsi is considered to have antioxidant and stress-reducing effects. It is said to have normalizing effects on blood pressure and blood sugar imbalances. Plants stand a bit more cold than other basils. This plant is revered as an elixir of life.