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100 Organic Dark Opal Sweet Basil Seeds - Heirloom and Non-GMO

100 Organic Dark Opal Sweet Basil Seeds - Heirloom and Non-GMO


Sweet Basil Dark Opal (Ocimum Basilicum Dark Opal) - Start these Sweet Basil seeds for both color as well as flavor. This Basil herb variety is called Dark Opal. The leaves have a clove-like spiciness flavor which is a little too strong for pesto but great for almost any basil dish, and it's especially good for vinegars and oils.


This old time favorite Dark Opal Sweet Basil herb has been delighting gardeners and foodies alike for decades now. Lots of people grow it for its decorative qualities, but it is a culinary wonder. Use its large glossy, purple leaves with large sliced tomatoes for fun contrast and a perfect flavor match that has been used since the turn of the last century! Dark Opal Basil grows best in full sun, but make sure it is fully protected from wind and the elements.


Grow in a rich, well-drained, soil in full sun. Pinch out growing tips to encourage bushier plants and to delay flowering. Start Basil seeds indoors near a sunny window 6 weeks before transplanting to the garden after danger of last frost. Or, sow Sweet Basil herb seeds in garden in full sun when frost danger is over and ground is warm. Make shallow furrows and cover the herb seeds 1/4 inch with loose soil. Keep seed moist until germination.


Herb Specifications

Season: Annual

USDA Zones: 4 - 9

Height: 12 - 24 inches

Bloom Season: Summer

Bloom Color: Pink

Environment: Full sun

Soil Type: Well-drained, pH 6.1 - 7.3

Deer Resistant: Yes

Latin Name: Ocimum Basilicum


Planting Directions

Temperature: 60F

Average Germ Time: 7 - 14 days

Light Required: Yes

Depth: 1/4 inch

Sowing Rate: 1 seed per inch

Moisture: Keep moist until germination

Plant Spacing: Rows 18 inches a part; thin seedlings 6 inches

  • Gifts and Shipping

    **Free Gift With Order** Free Surprise seed packet with every order!

    Seeds will be shipped through the regular mail using USPS and will not include tracking. We try to have germination instructions on all of our listings, though additional online researching is advised. We are not responsible for buyer germination success; seeds have been tested. Seed count is approximate, and packaged by weight. Seeds vary in size, weight is exact, and based upon empirical count, quantity is estimated. Liability of seller is limited to the cost of the item(s).

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