Thai Basil is a tender culinary herb prized for its sweet anise-clove aroma, sturdy purple stems and narrow green leaves topped with violet flower spikes. Unlike sweet basil, it holds its flavour well during cooking, making it indispensable in stir-fries, curries, pho and noodle dishes. Easy to grow in pots or beds, it thrives in warm Indian conditions and crops continuously when regularly harvested. The plant is fast-growing, pollinator-friendly and ornamental enough for kitchen-window gardens. Pinching the tips keeps it bushy and delays flowering, ensuring a steady supply of fresh, fragrant leaves through the warm months.
Specifications
| Family |
Lamiaceae |
| Native region |
Southeast Asia |
| Mature height |
30-60 cm |
| Mature spread |
20-30 cm |
| Growth rate |
Fast |
| Foliage |
Narrow green leaves with purple stems |
| Flower colour |
Purple to magenta |
| Flower season |
Summer to autumn |
| Climate zone |
Tropical to subtropical |
Care guide
| Sunlight |
Full sun, 6+ hours; light afternoon shade in peak summer |
| Watering |
Keep soil evenly moist; water when top 2 cm dries |
| Soil / mix |
Rich, well-drained loam with organic matter |
| Temperature |
20-32 C; protect from cold below 10 C |
| Humidity |
Moderate to high |
| Fertilizer |
Balanced liquid feed every 2-3 weeks in growing season |
| Pruning |
Pinch tips regularly and remove flower spikes to prolong harvest |
| Repotting |
Annual; treat as seasonal in most regions |
| Propagation |
Seeds or stem cuttings rooted in water |
| Pests & problems |
Aphids, whiteflies, spider mites; watch for fungal leaf spot |
| Toxicity / safety |
Non-toxic; edible and safe for pets |
| Difficulty |
Easy |
Uses
A staple culinary herb for Thai curries, stir-fries, pho and noodle dishes. Also grown as a fragrant, pollinator-friendly kitchen-garden ornamental.
Growing tips
In India sow after winter once nights stay above 15 C; in hot zones give light afternoon shade and mulch to retain moisture. Harvest often to keep plants bushy and productive.