Thai basil is a tender, aromatic herb with glossy green leaves, purple stems, and distinctive anise- and liquorice-scented foliage. Widely used in Southeast Asian cuisine, it is both ornamental and productive, producing attractive spikes of purple flowers in summer. For best results grow under cover, in a polytunnel or greenhouse.
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Exposure: Prefers warm, sheltered positions and is only moderately tolerant of wind. It is not coastal tolerant, as strong winds and salt-laden air can damage foliage and reduce growth.
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Size: 30–60 cm tall, with a spread of 30–45 cm.
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Soil: Fertile, moisture-retentive but well-drained soil rich in organic matter.
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Sun: Full sun; tolerates light shade but develops the best flavour and growth in a sunny position.
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Flowering time: July to September.
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Uses: Culinary herb and traditional medicinal plant.
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Wildlife benefits: The nectar-rich flowers attract bees, hoverflies, butterflies, and other pollinating insects, making it a valuable addition to herb gardens and pollinator-friendly planting schemes.
