BASIL-THAI

How to grow Thai Basil

1. Start with high-quality Thai basil seeds or obtain cuttings from a healthy plant to ensure robust growth.
2. Use well-draining soil rich in organic matter. A pH level between 6.0 and 7.5 is ideal. Mixing compost into the soil can improve fertility and drainage.
3. Plant Thai basil in a spot that receives at least 6-8 hours of sunlight daily. If growing indoors, place the plant near a sunny window or use a grow light.
4. Sow seeds about 1/4 inch deep and 12 inches apart. If using transplants, ensure the root ball is fully covered with soil, and space them similarly.
5. Keep the soil consistently moist but not waterlogged. Water the plants at the base to avoid wetting the leaves, which can lead to fungal diseases.
6. Apply a layer of mulch around the plants to retain soil moisture, regulate temperature, and reduce weed growth. Organic mulches like straw or shredded leaves work well.
7. Feed Thai basil with a balanced, organic fertiliser every 4-6 weeks. Avoid excessive nitrogen, which can lead to lush foliage but reduced essential oil content, affecting flavour.
8. Regularly pinch off the tops of the plants to encourage bushier growth and prevent flowering. Removing flower buds redirects the plant’s energy to leaf production, enhancing flavour. Always prune the buds off unless you plan to save seeds, otherwise they change the flavour of the leaves.
9. Monitor for common pests like aphids, spider mites, and whiteflies. Use organic pest control methods such as neem oil or insecticidal soap if infestations occur.
10. Ensure good air circulation around the plants to prevent fungal diseases. Watering at the base and avoiding overhead watering can help reduce the risk of disease.
11. Begin harvesting when the plants are about 6-8 inches tall. Harvest in the morning when the essential oils are most concentrated. Regular harvesting promotes new growth. And water well the day before harvesting.
12. Grow Thai basil alongside tomatoes, peppers, and other herbs like oregano and marjoram. These companions can enhance growth and flavor while helping to deter pests.
13. In colder climates, Thai basil can be grown indoors during the winter. Ensure adequate light and reduce watering frequency, as the plant’s growth will slow down in cooler conditions.
14. Thai basil can be propagated from cuttings. Take a 4-inch cutting from a healthy plant, remove the lower leaves, and place it in water until roots develop. Then, transplant it into soil.
15. Occasionally aerate the soil around your Thai basil to ensure roots receive adequate oxygen. This can be done gently with a garden fork, avoiding damage to the roots.

Heritage of Thai Basil

Thai Basil’s cultural heritage is believed to have originated in Southeast Asia, particularly in Thailand, Vietnam, and Cambodia.  Though this is a  hotly debated subject with some believing it originated in Iran.  Whatever its origin it has become a staple herb in many cultures especially traditional Southeast Asian cooking, where it is commonly used in numerous dishes, from aromatic curries and savoury stir-fries to refreshing salads and soups.  The herb’s historical use extends beyond the kitchen; it has been valued in traditional medicine for its therapeutic properties, such as aiding digestion and reducing inflammation. Over centuries, Thai basil has been cultivated and selectively bred to enhance its robust flavour and resilience in tropical climates. Its presence in gardens and markets throughout the region is a testament to its enduring popularity and cultural importance.

SHOP ABSeeds
SHOP Garden Supplements
Category Colour Guide
Planting Guide for Australia