Red Leaf Holy Basil is a striking annual herb from the Lamiaceae family, prized in Thai kitchens for its distinctive flavor and ornamental purple-tinged foliage. This heirloom variety of Ocimum sanctum reaches 24-36 inches tall and matures in 70-79 days, making it quick enough to harvest fresh leaves throughout the season in zones 10-11. Beyond its culinary excellence, this plant carries deep spiritual and medicinal significance in Indian tradition, where it's considered sacred. Gardeners love it equally for its pointed, jewel-toned leaves and the way it transforms containers into living sculpture.
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10-11
36in H x ?in W
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The purple-tinged leaves alone make Red Leaf Holy Basil worth growing, catching light like stained glass in a sunny garden bed or pot. It matures remarkably fast, delivering harvestable leaves in 70-79 days, so you'll be using it fresh in your kitchen well before fall. The flavor is unmistakably Thai, with that complex spice and warmth that transforms simple dishes into restaurant-quality meals. Historically revered in India for physical and spiritual benefits, this variety bridges gardening, cooking, and cultural practice in one bushy, rewarding plant.
Red Leaf Holy Basil shines in Thai cooking, where its peppery, complex flavor elevates stir-fries, curries, and aromatic dishes. Fresh leaves are harvested and added near the end of cooking to preserve their distinctive character. Beyond the kitchen, the leaves are dried and brewed into tea, honoring the plant's long tradition in Ayurvedic and spiritual practices. The ornamental foliage also makes it a beautiful choice for container gardening, blurring the line between herb garden and decorative planting.
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Start seeds indoors 6-8 weeks before your last frost date, sowing shallowly and keeping soil warm (around 70°F). Seeds germinate in 7-10 days with consistent moisture. Transplant seedlings into individual pots once they develop true leaves, and harden off gradually over 7-10 days before moving outdoors.
Transplant outdoors after all frost danger has passed and soil has warmed, typically when nighttime temperatures consistently reach 60°F or higher. Space plants 18 inches apart, handling seedlings gently to avoid disturbing the developing root system. Water well at planting to settle soil around roots.
In zones 10-11, direct sow seeds outdoors after soil has warmed in spring. Plant shallowly and keep soil evenly moist until seedlings emerge.
Begin harvesting leaves once the plant reaches 6-8 inches tall, typically 70-79 days after sowing, though you can pinch leaves earlier for cooking. Harvest in the morning after dew dries for the best flavor. Pinch leaves from the top of stems to encourage branching and continued production. The plant continues producing harvestable foliage throughout the growing season until frost arrives; in warm climates, it may produce year-round.
Pinch back the growing tips regularly to encourage a fuller, bushier plant rather than one tall central stem. This promotes more leaf production and a denser, more ornamental form. Pinching also delays flowering, extending the productive harvest window. Remove any flower buds if your priority is fresh leaf production, as flowering diverts energy from foliage.
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“Red Leaf Holy Basil is a traditional cultivar of Ocimum sanctum, a plant held sacred in Hindu and Ayurvedic traditions across India for centuries. This specific variety preserves the deep purple-tinged foliage and essential character of holy basil while offering the productive, ornamental growth that modern gardeners seek. As a heirloom, non-GMO selection, it carries forward the lineage of seeds saved and shared within communities that valued both its spiritual significance and its irreplaceable role in the Thai kitchen.”