Holy Basil (Tulsi)
Also known as: Tulsi · Ocimum tenuiflorum · Ocimum sanctum · Sacred basil · Kaphrao
2 types of holy basil (tulsi)
When & where
Germination
Spacing & depth
How to plant
Sow on the surface of damp seed-starting mix and press in lightly — light helps germination. Keep warm and moist under a humidity dome. Transplant after frost to a hot, well-drained spot. Pinch tips to encourage branching.
Grower's tip
Peppery, clove-like aroma. Used in Ayurvedic teas and Thai cooking. Protect from frost; in cool climates treat as an annual or overwinter cuttings indoors.
Soil preferences
Light, well-drained loam. Most culinary herbs suffer in soggy soil.
6.0–7.5 (neutral)
A single fork of finished compost at planting is plenty — over-feeding weakens flavor.
Watering
Consistent moisture while young; let the top inch dry between waterings once established.
Water at the base in the morning to keep leaves dry and prevent mildew.
Overwatered: yellow lower leaves, damp-smelling soil, wilt that doesn't rebound. Underwatered: crispy tips, purple stems, sudden bolting.
Either works — Top-water established plants at the soil line in the morning. Bottom-water seed trays and small pots until roots fill the container.
Temperature tolerance
65–85°F (18–29°C) ideal
55–65°F (13–18°C)
Most annual herbs are frost-tender; perennial herbs (sage, thyme, oregano, mint) tolerate frost once established.
Container growing
Yes — great in containers
6–10 in (15–25 cm) wide, minimum 6 in deep
Herbs thrive in pots — group by water needs (Mediterranean herbs on the drier side, basil/parsley/cilantro on the wetter).
Succession planting
Sow leafy herbs (basil, cilantro, dill, parsley) every 3–4 weeks for a steady supply.
Detailed harvesting
Pinch or snip stems just above a leaf pair — never strip a plant of more than one third at a time. Harvest before flowering for peak flavor.
Post-harvest storage & preservation
Air-dry small bundles upside-down in a dark airy spot, or freeze chopped in olive oil in ice-cube trays. Store dried leaves whole in a jar; crush just before use.
Culinary, medicinal & other uses
Culinary flavoring — fresh in salads and finishing, dried in slow cooks and rubs. Many herbs (basil, mint, chamomile) also infuse oils, vinegars, or teas.
Medicinal or traditional uses are shared for interest only — this is not medical advice. Consult a qualified professional before using any plant medicinally.
Seed saving
Mostly insect-pollinated; some (basil, mint) self-pollinate.
Isolate different varieties of the same species by 150 ft or cage/bag flower heads to keep strains true.
Let one plant flower fully; harvest brown, dry seed heads into a paper bag; rub free and store dry.
Your zone's planting calendar
Pick your USDA hardiness zone and we'll estimate the key dates for holy basil (tulsi) in your area. These are regional averages — always check your own last-frost forecast before sowing.
From your kitchen — grow holy basil (tulsi) from what you already have
Most annual and biennial herbs give seed if you stop harvesting one plant and let it flower.
- 1Choose your best-flavored, latest-to-bolt plant to be the seed parent.
- 2Let it flower, then wait for the seed heads to dry brown and papery on the plant.
- 3Cut whole stems into a paper bag before they shatter.
- 4Rub or crumble the heads to release seed; sieve out the chaff and store dry in an envelope.
Storage: Most herb seed stays viable 2–4 years dry.
My Holy Basil (Tulsi) notes
Holy Basil (Tulsi) seeds on hand
Track packets and loose seeds you already have. Private to your account.
Par level — leave at 0 for no alert. Anything below par shows on Seed Starting and your shopping list.
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