Sow
0.2 inches (0.5 cm) deep with a guideline distance of
1.95 inches (5.0 cm). Soil temperature should be kept higher than
18°C / 64°F to ensure good germination.
By our calculations, you should look at sowing Aji Yellow about 38 days before your last frost date.
As Aji Yellow is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.