Heirloom Seeds
Purple Basil Seeds – Dark Opal, Non-GMO Heirloom
by Organo Republic · United States
Buy directly from Organo Republic. Final price and availability confirmed at checkout.
Dark Opal purple basil ( Ocimum basilicum 'Dark Opal') is a striking, deep-burgundy basil that is as ornamental as it is flavorful. These non-GMO purple basil seeds grow into upright plants with rich, glossy purple leaves and lavender-pink flowers. Its spicy,
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slightly clove-like flavor and dramatic color make it a standout in both the garden and the kitchen. Who it's for Great for gardeners who want bold color in herb beds and containers, and cooks looking for a spicier, more colorful basil for infusions and garnishes. How & when to plant Start indoors 4–6 weeks before your last frost, or sow directly when soil is warm and nights stay above 50°F. Sow 1/4 inch deep, spacing plants 10–12 inches apart in full sun (6+ hours) for the deepest color. A tender annual for USDA zones 4–10, it prefers evenly moist soil; pinch tips to keep plants full and richly colored. Harvest Leaves are ready in about 65–80 days. Harvest by pinching sprigs from the top just above a leaf pair, and pick regularly to encourage bushy new growth. Removing flower spikes keeps the foliage vivid and tender. Benefits & uses The purple leaves make a beautiful, spicy garnish and turn vinegars, oils, and syrups a gorgeous ruby hue. In the garden its dark foliage and pink blooms add contrast to borders and containers while attracting pollinators. Growing guide: New to this variety? Read our full guide, How to Grow Purple Basil From Seed , for step by step sowing, spacing, and harvest tips.