Basil - Dark Opal

Seed Amount:

Up to 80 days. Large, glossy, dark purple-bronze leaves make this herb very ornamental as well as flavorful. Attractive as border for yellow or gold flowers.

Dark Opal Basil Herb Garden Seeds

Ocimum basilicum

Dark Opal Basil was developed at the University of Connecticut in the 1950's and is known for application in decorating and in cooking. This herb is often used in many recipes for its familiar licorice flavor, and the leaves are used to dress up the plate.

  • Height - 12 to 18 inches
  • Spacing - 4 to 8 inches
  • Spread - 1 1/2 to 3 inches

Dark Opal Basil may adorn small pink blossoms, which adds nice color to your flower or vegetable garden. May be also grown and harvested as a microgreen. Contains Vitamins A, K, and C as well as iron and potassium. Green Fact: Many cultures have regarded Basil as a symbol for love.

Growing Purple Basil Microgreens

Purple Basil Seeds: ocimum basilcum
Seeding: Approx 1 Oz of seed for a 10"x20" tray
Seed Presoak: No (mucilaginous)
Growing Medium: hydroponic, soil
Preferred Medium: hydroponic for microgreens, soil for baby greens and adult stage
Germination Rate: high
Germination Time: 3 to 4 days
Microgreens Harvest time: 8 to 12 days
Microgreens Ideal Harvest: 10 days
Baby Salad / Adult Stage Harvest: 16+ days (grow in soil)
Micro Greens Color: purple with some green
Micro Greens Flavor: intense basil
Learn More


  • Microgreens & baby salad greens
  • Garnishes & sandwiches
  • Sprouting
  • Survival Food Storage
  • Gardening
  • Cooking & seasoning
  • More

Notes & Growing Tips: Purple basil is a more colorful variety of sweet basil. It has a mucilaginous seed, meaning that it develops a jelly-like coating when it gets wet. Mist more frequently to keep the coating moist. Grows very well hydroponically and does better in well-lit conditions, but it is a slower grower. You may experiment with harvest times past 10 days. Purple basil is a spectacular purple color with green highlights that makes for a colorful garnish. Micro basil does not grow tall, so you will need to harvest close to the root line and rinse well. Micro basil seeds are among the more expensive seeds but are worth it for their amazing color and intense basil flavor.

Micro basil is an outstanding choice for caprese, pesto or any recipe that calls for fresh basil. The flavor of micro basil is a bit more intense than adult basil.

***Note: Although we have indicated the specific medium that this particular seed prefers, you can still experiment with either soil or hydroponic mediums. Results may vary.

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