Try to aim for a seed spacing of at least
3.9 inches (10.0 cm) and sow at a depth of around
1.95 inches (5.0 cm). Soil temperature should be kept higher than
16°C / 61°F to ensure good germination.
By our calculations, you should look at sowing Yin yang about 14 days after your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Yin yang is a tender plant.
The species name vulgaris is from the Latin vulgus (“the multitude, the masses”) + -āris, and means “common”, “usual”, or “commonly known” .