Tulsi 'Krishna' (Ocimum tenuiflorum)
If you are looking to turn over a new leaf and make self-nurture your nature, meet Krishna Tulsi, Ocimum tenuiflorum. This is one type of Holy Basil, a highly aromatic perennial ayurvedic medicinal herb, which is praised by practitioners in Ayurvedic medicine. An Indian derivative of holistic medicine, Ayurvedic practices incorporate biodiverse plants, exercise, and good diet for the makings of a healthy lifestyle.
Like most basils, Ocimum tenuiflorum has a shrubby growing habit and will reach 2-4 ft tall! Tulsi has delicate pink flowers, hairy stems, and green leaves. Within the first two months of growing Krishna Tulsi, you can pick leaves and flowers fresh from Ocimum tenuiflorum to make your own "elixir of life" tea. Its cool and mellow flavor profile will invigorate your senses as you indulge in its bold familiarity to peppermint, cloves, licorice and lemon. In fact, occasional harvesting of this plant will encourage its growth even more.
Holy Basil, The Miracle Worker in Your Garden: Ocimum tenuiflorum has a number of practical uses, and makes an excellent companion plant! Its strong aromatic oils like Eugenol, Oleanolic Acid, Ursolic Acid, Rosmarinic Acid, and Linalool make the plant medicinally valuable, and act as a natural pest repellent.
Quick Care Guide
| Plant Type | Perennial Herb |
| Harvest Season | Year round. Harvesting will encourage growth. |
| Mature Size | 2-5 ft tall and wide |
| Soil & Moisture | Rich, moist, well-draining soil high in organic matter |
| Light Requirements | Full Sun, Part Shade |
| Growth Rate | Fast |
| Self-fertile | Yes |
| Zone Hardiness | Outdoors 9-11; Patio/Greenhouse 4+ |
| Propagation | Grown from seed, capable of harvesting now and within the growing season |
Overview
Tulsi (Ocimum tenuiflorum), also known as Holy Basil, is a sacred herb in Hinduism and is revered for its medicinal and spiritual significance. There are three primary varieties of Tulsi: Krishna, Rama, and Vana. Each variety has unique characteristics but shares similar growing requirements. This guide will help you successfully grow and enjoy the benefits of Krishna, Rama, and Vana Tulsi in your garden.
Climate and Soil Requirements
- Climate: Tulsi thrives in warm, tropical to subtropical climates. It is best suited for USDA hardiness zones 10-11 but can be grown as an annual in cooler climates. The plant prefers temperatures between 70-95°F and does not tolerate frost.
- Soil: Prefers well-draining, fertile soil with a slightly acidic to neutral pH (6.0-7.5). The plant can adapt to various soil types, including sandy and loamy soils.
Planting
- Location: Choose a sunny location that receives at least 6-8 hours of direct sunlight daily. Tulsi can tolerate partial shade but will have better growth and medicinal properties in full sun.
- Soil Preparation: Prepare the soil by tilling and adding compost or organic matter to enhance fertility and drainage.
- Planting Time: Plant seeds or young plants in the spring after the last frost. If starting from seed, sow seeds indoors 6-8 weeks before the last frost and transplant seedlings outdoors once the danger of frost has passed.
- Spacing: Space plants 12-18 inches apart to allow adequate room for growth and air circulation.
Watering
- Establishment Phase: Water regularly to keep the soil consistently moist but not waterlogged during the first year. Consistent moisture is crucial for young plants.
- Mature Plants: Once established, Tulsi is somewhat drought-tolerant. Water deeply and less frequently, allowing the top inch of soil to dry out between waterings.
Sunlight
- Full Sun: Ensure the plants receive at least 6-8 hours of direct sunlight daily for optimal growth and medicinal properties.
Fertilizing
- Growing Season: Apply a balanced, slow-release fertilizer in early spring to promote healthy growth. Supplement with organic matter or compost.
- Frequency: Fertilize every 4-6 weeks during the growing season.
Pruning and Maintenance
- Routine Pruning: Prune regularly to remove dead or yellowing leaves and to shape the plant. Pruning encourages bushier growth and prevents the plant from becoming leggy.
- Flowering: Pinch off flower buds to prolong the leaf production period. Allow some flowers to bloom and set seed if you want to collect seeds for future planting.
Pest and Disease Management
- Common Pests: Monitor for pests such as aphids, spider mites, and whiteflies. Use insecticidal soap or neem oil to control infestations.
- Diseases: Watch for signs of fungal diseases such as powdery mildew and root rot. Ensure proper spacing, good air circulation, and avoid overhead watering to reduce disease risk. Apply fungicides if necessary.
Harvesting Leaves
- When to Harvest: Harvest leaves as needed throughout the growing season. The best time to harvest is in the morning after the dew has dried, when the essential oils are most concentrated.
- How to Harvest: Use scissors or garden shears to cut the leaves, taking care not to damage the main stems. Harvesting regularly encourages new growth and maintains the plant's shape.
Krishna Tulsi
- Description: Krishna Tulsi has dark purple stems and leaves with a strong, spicy aroma. It is considered the most medicinally potent variety.
- Uses: Commonly used in Ayurvedic medicine for its anti-inflammatory, antioxidant, and immune-boosting properties.
Rama Tulsi
- Description: Rama Tulsi has bright green leaves and a milder aroma compared to Krishna Tulsi. It is widely grown and used for its soothing properties.
- Uses: Often used in teas and herbal remedies to promote relaxation and stress relief.
Vana Tulsi
- Description: Vana Tulsi, also known as Wild Tulsi, has light green leaves and a lemony aroma. It grows more vigorously and can reach a larger size than Krishna and Rama varieties.
- Uses: Known for its adaptogenic properties, Vana Tulsi is used to improve overall health and resilience to stress.
