Holy Basil

Family: Lamiaceae Herb

Planting Schedule

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Fragrant and unmistakably aromatic, Holy Basil (Ocimum tenuiflorum) fills the garden with a cool, peppery-sweet perfume that lingers in the air as the leaves sway.

Expect tender, medium-green foliage with a softly textured, slightly fuzzy feel, and a bold flavor profile that shines in aromatic infusions and fragrant seasoning blends. Grow it for its lush, upright habit and its abundant leaf harvest potential—an elegant, high-scent addition to any home herb patch.

Light: Full SunMaturity: 60 DaysHabit: Upright

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Holy Basil Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Apr 20th	Jun 1st	Jul 31st – Aug 1st
Zone 2a	Apr 13th	May 25th	Jul 24th – Aug 29th
Zone 2b	Apr 3rd	May 15th	Jul 14th – Aug 25th
Zone 3a	Apr 3rd	May 15th	Jul 14th – Sep 1st
Zone 3b	Apr 7th	May 19th	Jul 18th – Sep 21st
Zone 4a	Apr 3rd	May 15th	Jul 14th – Sep 24th
Zone 4b	Apr 1st	May 13th	Jul 12th – Sep 27th
Zone 5a	Mar 27th	May 8th	Jul 7th – Sep 30th
Zone 5b	Mar 23rd	May 4th	Jul 3rd – Oct 5th
Zone 6a	Mar 20th	May 1st	Jun 30th – Oct 10th
Zone 6b	Mar 14th	Apr 25th	Jun 24th – Oct 16th
Zone 7a	Mar 9th	Apr 20th	Jun 19th – Oct 20th
Zone 7b	Feb 27th	Apr 10th	Jun 9th – Oct 28th
Zone 8a	Feb 18th	Apr 1st	May 31st – Nov 5th
Zone 8b	Feb 9th	Mar 23rd	May 22nd – Nov 12th
Zone 9a	Jan 23rd	Mar 6th	May 5th – Nov 26th
Zone 9b	Dec 29th	Feb 9th	Apr 10th – Dec 9th
Zone 10a	—	Oct 1st	Nov 30th – Feb 28th
Zone 10b	—	Oct 1st	Nov 30th – Feb 28th
Zone 11a	—	Oct 1st	Nov 30th – Feb 28th
Zone 11b	—	Oct 1st	Nov 30th – Feb 28th
Zone 12a	—	Oct 1st	Nov 30th – Feb 28th
Zone 12b	—	Oct 1st	Nov 30th – Feb 28th
Zone 13a	—	Oct 1st	Nov 30th – Feb 28th
Zone 13b	—	Oct 1st	Nov 30th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	60
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

Holy basil isn’t your everyday supermarket basil—its flavor comes on with a cool, peppery edge wrapped in sweet, anise-like perfume. Chop it fine and add near the end, or you’ll mute that signature aroma and end up with more leaf taste than fragrance.

Best Uses

steeped infusion for a fragrant tea or aromatic syrup
tear-and-fold finishing over steaming rice or noodles for last-minute lift
quick-chopped seasoning in stir-fries where you want scent more than bulk
leaf-forward pesto-style paste blended with nuts and citrus

Flavor Profile

cool peppery bite sweet anise-citrus perfume tender leafy texture with a faintly fuzzy finish lingering aromatic heat on the back of the tongue

Kitchen Pairings

lime garlic ginger soy sauce coconut milk rice vinegar

Frequently Asked Questions

What pest or disease most commonly affects Ocimum tenuiflorum (holy basil), and how can I control it?

Look out for downy mildew and leaf spot, especially when leaves stay wet from overhead watering or humid air. Water at the soil line, space plants for airflow, and remove badly spotted leaves early. If new lesions keep appearing, spray a labeled copper-based fungicide according to the label and repeat at the interval specified.

How often should I water holy basil during its main growth phase?

During active growth, keep the top 1–2 inches of soil lightly moist but not soggy; holy basil performs best with consistent moisture and good drainage. Water deeply when the surface starts to dry, typically about every 3–5 days in warm weather, but reduce frequency after rainy periods or in cool conditions. Avoid wetting foliage because moisture on leaves promotes fungal issues.

How do I know when Ocimum tenuiflorum is ready to harvest?

Harvest starting around 50–60 days, once plants are well branched and have developed multiple healthy leaf pairs per stem. For the best flavor and to encourage new growth, pinch or snip just above a set of leaves rather than cutting into bare stems. Take the main harvest before flowering fully opens; once flowers start, leaf quality and aroma typically decline.