Black seeded Simpson
Black seeded simpson
Look to ensure a distance 7.92 inches (20.3 cm) between seeds when sowing – bury at a depth of at least 0.49 inches (1.25 cm) deep. Soil temperature should be kept higher than 5°C / 41°F to ensure good germination.
By our calculations, you should look at sowing Black seeded simpson about 60 days before your last frost date.