Ensure a distance of
3.9 inches (10.0 cm) between seeds when sowing - look to sow at a depth of approximately
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 Black Valentine about 14 days after your last frost date.
Ensure that temperatures are mild (minimum night temperatures should be around 13°C / 55°F) and all chance of frost has passed before planting out, as Black Valentine is a tender plant.
By our calculations, you should look at planting out Black Valentine about 14 days after your last frost date.
Heirloom variety developed in North America circa 1850.