Caribbean Tree Basil

Family: Lamiaceae Herb

Planting Schedule

Provide your location or planting zone to unlock dates and add Caribbean Tree Basil to a garden.

Caribbean Tree Basil fills the garden with a lush, upright presence and a richly aromatic fragrance that blooms in the air—bold, sweet, and distinctly herbal with a bright, sun-warmed lift.

At maturity, it forms sturdy, woody-leaning stems topped with large, velvety leaves that hold their shape beautifully and exude a deep green, tea-like perfume. Grow Caribbean Tree Basil for standout fresh use and for fragrant sauces, pesto-style blends, and herb-forward infusions that showcase its full-bodied character.

Light: Full SunMaturity: 70 DaysHabit: Upright

Botanical illustration of Caribbean Tree Basil

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Caribbean Tree 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	Protected Environment Only
Zone 2a	Apr 13th	Jul 13th	Sep 21st – Aug 29th
Zone 2b	Apr 3rd	Jul 3rd	Sep 11th – Aug 25th
Zone 3a	Apr 3rd	Jul 3rd	Sep 11th – Sep 1st
Zone 3b	Apr 7th	Jul 7th	Sep 15th – Sep 21st
Zone 4a	Apr 3rd	Jul 3rd	Sep 11th – Sep 24th
Zone 4b	Apr 1st	Jul 1st	Sep 9th – Sep 27th
Zone 5a	Mar 27th	Jun 26th	Sep 4th – Sep 30th
Zone 5b	Mar 23rd	Jun 22nd	Aug 31st – Oct 5th
Zone 6a	Mar 20th	Jun 19th	Aug 28th – Oct 10th
Zone 6b	Mar 14th	Jun 13th	Aug 22nd – Oct 16th
Zone 7a	Mar 9th	Jun 8th	Aug 17th – Oct 20th
Zone 7b	Feb 27th	May 29th	Aug 7th – Oct 28th
Zone 8a	Feb 18th	May 20th	Jul 29th – Nov 5th
Zone 8b	Feb 9th	May 11th	Jul 20th – Nov 12th
Zone 9a	Jan 23rd	Apr 24th	Jul 3rd – Nov 26th
Zone 9b	Dec 29th	Mar 30th	Jun 8th – Dec 9th
Zone 10a	—	Oct 1st	Dec 10th – Feb 28th
Zone 10b	—	Oct 1st	Dec 10th – Feb 28th
Zone 11a	—	Oct 1st	Dec 10th – Feb 28th
Zone 11b	—	Oct 1st	Dec 10th – Feb 28th
Zone 12a	—	Oct 1st	Dec 10th – Feb 28th
Zone 12b	—	Oct 1st	Dec 10th – Feb 28th
Zone 13a	—	Oct 1st	Dec 10th – Feb 28th
Zone 13b	—	Oct 1st	Dec 10th – Feb 28th

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

Caribbean Tree Basil reads like a bolder cousin—more tea-green and gently sweet, with leaves that stay structured instead of collapsing. It’s built for high-aroma work: chop fine for fast perfume release or hit a mortar/blender for a pesto-style sauce that clings to hot food without tasting thin.

Best Uses

quick-chop fresh topping for rice bowls and grilled proteins
batch blend herb pesto-style sauce (especially with nuts/cheese)
fragrant infusion in oils, vinegars, or tea-steeped syrups
sturdy-leaf finishing for soups and braises (add late, to keep the perfume)

Flavor Profile

bold sweet-leaning herbal aroma warm, tea-like green notes slightly woody, sturdy leaf texture bright, sun-warmed lift in the finish

Kitchen Pairings

coconut milk lime garlic ginger olive oil chicken or shellfish

Frequently Asked Questions

What pest or disease commonly affects Ocimum gratissimum (Caribbean tree basil), and how can I control it?

Caribbean tree basil is prone to leaf spot and powdery mildew when air is humid and leaves stay wet. Water at the soil line, space plants for airflow, and remove badly spotted leaves; if it persists, spray with a labeled potassium bicarbonate or sulfur fungicide and repeat as directed on the label. Watch closely for sucking pests like whiteflies and aphids on new growth and rinse them off with a strong jet of water, then treat with insecticidal soap if needed.

How often should I water Ocimum gratissimum during its main growing phase?

During active growth (roughly once it’s established and until late summer), keep the top 1–2 inches of soil evenly moist but not soggy. In full sun, this usually means watering about 2–3 times per week depending on heat, but always check soil moisture first and reduce watering if the soil stays wet. Avoid long dry spells, because drought-stressed tree basil tends to drop leaves and becomes more susceptible to mildew.

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

Begin harvesting when plants are well branched and reach the listed maturity window (about 70 days from sowing) with vigorous new shoots. Pick sprigs regularly once the plant has multiple sets of leaves, harvesting no more than about one-third of the growth at a time to keep it productive. For best flavor, harvest in the morning before the sun is strongest, and cut just above a leaf node to encourage fresh side shoots.