How to Plant and Grow ‘Dark Opal’ Basil Ocimum basilicum var. basilicum ‘Dark Opal’
There are few herbs and vegetables that are so gorgeous they could work solely as ornamental plantings. ‘Dark Opal’ is one such plant.
The deep purple, slightly ruffled leaves make an elegant anchor to green foliage or a surprising contrast to colorful flowers like marigolds.
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Of course, it’s not all about the looks. Yes, it’s a beautiful herb, but this sweet basil cultivar also tastes marvelous.
You’re not giving up any of the basil flavor you know and love when you grow this beauty.
Most of us grow basil as an annual, since the leaves tend to become tougher as the plant ages and because it’s only hardy in USDA Growing Zones 10 to 12.
You can learn more about how to grow basil in our guide. In this guide, we’ll set you on the path to ‘Dark Opal’ success.
Here’s what we’ll discuss:
I’m sure you can’t wait to start enjoying your plants, so let’s dig in.
Cultivation and History
‘Dark Opal’ was bred by Dr. Joseph M. Lent and Dr. John Scarchuk, professors at the University of Connecticut’s Horticulture and Plant Breeding program.
The pair identified basil varieties from Turkey that had purple and green variegated leaves and decided they wanted to refine the plants to create a cultivar that was entirely purple, from stem to flower spike.
After a few years of selective breeding, they managed to create a uniformly purple plant with a pleasing flavor. It hit the market and was an instant smash hit with growers.
‘Dark Opal’ received the All-America Selections Bronze Medal and the All-America Selections winner in the Vegetable category
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