Purple Dark Opal Basil (Ocimum basilicum 'Dark Opal') Organic Seeds – Deep Purple Leaves, Culinary and Ornamental Herb for Decorative Dishes
Minimum: 50+ seeds
Velvety Deep Purple Leaves • Sweet-Spiced Aroma • Edible Beauty for Garden & Plate
Some herbs are grown for flavor. Some are grown for beauty. Dark Opal Basil gives you both in one unforgettable plant. The first time you see those rich, almost black-purple leaves glowing in the sun, you realize this is not just another basil. It is a statement. For home gardeners, chefs plating decorative dishes, and seed collectors who love striking foliage, Purple Dark Opal Basil seeds bring drama and depth to the herb garden.
I always tuck this variety along bed edges where it can contrast against green lettuces and silver herbs. It stops people in their tracks.
What Makes Dark Opal Basil Unique?
Dark Opal is a classic purple-leaf cultivar of Ocimum basilicum, prized for its saturated color and sweet, slightly spicy flavor. Plants grow upright and bushy, typically reaching 16 to 24 inches tall when properly pinched.
You can expect:
• Deep burgundy to nearly black leaves
• Smooth, slightly glossy texture
• Pink to lavender flower spikes
• Strong sweet basil fragrance with subtle clove notes
The color intensifies in full sun, especially during warm summer days. In mixed plantings, it creates bold contrast and architectural interest.
Flavor & Culinary Use
Do not mistake it for ornamental only. Dark Opal delivers true basil flavor with a hint of spice and depth.
Perfect for:
• Garnishing pasta and salads
• Purple pesto with visual impact
• Herb-infused vinegars
• Compound butters
• Fresh summer drinks and cocktails
• Edible flower toppings
The purple leaves hold their color beautifully when used fresh. For chefs and serious home cooks, this is one of the most visually striking fresh herb seeds you can grow.
Ornamental & Pollinator Value
Beyond the kitchen, Dark Opal Basil earns its space in decorative borders and edible landscapes. The lavender blooms attract bees and beneficial insects, making it a strong addition to pollinator-friendly gardens.
Ideal for:
• Raised beds
• Patio containers
• Mixed ornamental beds
• Herb spirals
• Farmers market display bunches
It pairs beautifully with green basil varieties, creating a layered, professional look in herb plantings.
Growing Purple Dark Opal Basil at Home
Dark Opal Basil seeds grow much like traditional sweet basil, thriving in warmth and sunshine.
Sun: Full sun for best color
Soil: Well-drained soil enriched with compost
Spacing: 10 to 12 inches apart
Germination: 5 to 10 days in warm soil
Ideal Temperature: 70 to 90°F
Start seeds indoors 4 to 6 weeks before last frost or direct sow after soil has warmed. Basil dislikes cold soil, so patience early on leads to stronger plants.
Pinch young plants at 6 inches tall to encourage branching. Continue harvesting from the top to maintain bushy growth and delay flowering. If you want extended leaf production, remove flower buds early. If you want pollinator support and seed saving, allow some plants to bloom fully.
Water consistently but avoid waterlogged soil. Moderate feeding keeps foliage lush without sacrificing flavor.
In a zone 7 garden, treat as a warm-season annual.
Organic, Open-Pollinated & Seed Saver Friendly
Our Purple Dark Opal Basil organic seeds are open-pollinated and non-GMO. Save seeds from mature flower spikes and continue growing this striking variety season after season.
Why Grow Dark Opal Basil?
• Stunning deep purple foliage
• Sweet, classic basil flavor with subtle spice
• Excellent for decorative dishes
• Attracts pollinators
• Easy to grow in beds or containers
There is something deeply satisfying about harvesting a handful of dark purple leaves against the backdrop of summer light.
If you want your herb garden to taste incredible and look unforgettable, plant Purple Dark Opal Basil seeds and let color become part of your harvest.