Tulsi (Holy Basil)

Family: Lamiaceae Herb

Aromatic as a warm breeze—Tulsi Holy Basil fills the garden with a vivid, clove-tinged fragrance and a cool, minty lift that lingers on the fingertips.

Its leaves are softly textured and richly veined, forming an upright, branching plant that’s as beautiful as it is fragrant. Grow Tulsi for fresh leaf use and fragrant infusions, and for finishing sauces and pickling blends with its unmistakable, spiritual basil character.

Light: Full SunMaturity: 70 DaysHabit: Upright

Botanical illustration of Tulsi (Holy Basil)

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 14th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Jun 6th
Harvest Begins	Aug 15th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Culinary Notes

Chef's Note

Tulsi’s hallmark is that clove-basil perfume with a refreshing minty snap that doesn’t just “taste herby”—it perfumes the whole dish. Use it near the end (or in quick steeps) so the leaves keep their cool lift instead of turning flat under long heat.

Best Uses

tear-and-mix finishing for hot rice or noodles at the last second
steep for fragrant tea and warm infusions
pulse into a quick pesto with nuts and bitter greens kept in check
fold into pickling brine or vinegar sauces for a cooling-herbal top note

Flavor Profile

clove-tinged basil aroma cool minty lift on the finish peppery, slightly herbal bite tender leaves with a softly textured chew

Kitchen Pairings

garlic lime or lemon ginger coconut milk soy sauce chicken or tofu

Frequently Asked Questions

What’s a common disease or pest problem for Ocimum tenuiflorum (Holy Basil/Tulsi), and how do I fix it?

Look for downy mildew and leaf spots, which show up as pale/yellow patches or dark lesions on humid foliage. Improve airflow between plants, water at the base (not on leaves), and remove badly affected leaves early. If the problem persists, use a labeled copper-based fungicide according to the product directions.

How often should I water Holy Basil during its main growing phase?

During active growth, keep the top 1–2 inches of soil lightly moist but not soggy—typically watering about 1–2 times per week depending on heat and container vs. ground conditions. Water thoroughly until excess drains (containers) and let the soil surface dry slightly between waterings to prevent root stress. Avoid frequent tiny sips, which encourage shallow roots and leaf disease.

How can I tell when Ocimum tenuiflorum is ready to harvest?

Harvest when plants are well established and have strong, leafy side shoots—usually around 60–70 days after sowing. The best time is just before flowering: pick sprigs that have multiple sets of leaves, and pinch above a pair of leaves to encourage bushier regrowth. Continue harvesting regularly so plants don’t set many flowers and slow leafy growth.