Sow
0.23 inches (0.6 cm) deep with a guideline distance of
3.9 inches (10.0 cm). For optimal germination, soil temperature should be a minimum of
13°C / 55°F.
By our calculations, you should look at sowing Welsh Red about 28 days before your last frost date.
Welsh Red is very hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.