Basil 'Purple Dark Opal'

Ocimum basilicum

How to grow Basil '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. 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.