Seed Swaps

Basil 'Purple Dark Opal'   

Ocimum basilicum

  • 41 plantings
  • 5 available for swap
  • 5 wanted
  • 48 stashed

Purple Dark Opal is part of the Ocimum genus and is a Basil variety. Its scientific name is Ocimum basilicum 'Purple Dark Opal'. Leaves appear approximately as a   Eggplant and   Old mauve colour. This variety is an Herb that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Purple Dark Opal is known for growing with a forb-like habit to a height of approximately 45.0 cm (that's 1.46 feet in imperial).

Purple Dark Opal Basil is normally fairly low maintenance and is normally quite easy to grow, as long as a level of basic care is provided throughout the year. Being aware of the basic soil, sun and water preferences will result in a happier and healthier plant.

This variety plant info is provided by the myfolia gardener's wiki. All details about Purple Dark Opal have been kindly provided by our members.

How to grow Purple Dark Opal

  • Full Sun

  • Medium

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Purple Dark Opal is thought of as half hardy, so remember to watch your frost dates and ensure you have this plant protected when the temperature dips. The USDA Hardiness Zones typically associated with Purple Dark Opal are Zone 4 and Zone 10. Purple Dark Opal needs a loamy, sandy and silty soil with a ph of 5.5 to 7.0 (weakly acidic soil to neutral soil).

Growing Purple Dark Opal from seed

Ensure a distance of 0.5 inches (1.27 cm) between seeds when sowing - look to sow at a depth of approximately 0.12 inches (0.3 cm). Soil temperature should be kept higher than 10°C / 50°F to ensure good germination.

By our calculations, you should look at sowing Purple Dark Opal about 20 days before your last frost date.

Transplanting Purple Dark Opal

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Purple Dark Opal is a half hardy plant.

Harvesting Purple Dark Opal

When harvesting, cut the whole stem just above a set of leaves to encourage the plant to bush out.

Unless you are saving seeds, cut flowers off the plant as soon as they appear to prolong harvest time.

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