Sow
0.23 inches (0.6 cm) deep with a guideline distance of
1.95 inches (5.0 cm). For optimal germination, soil temperature should be a minimum of
15°C / 59°F.
By our calculations, you should look at sowing Little Hero Yellow about 49 days before your last frost date.
Little Hero Yellow is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.