Sow
0.99 inches (2.54 cm) deep with a guideline distance of
2.92 feet (90.0 cm). Soil temperature should be kept higher than
16°C / 61°F to ensure good germination.
By our calculations, you should look at sowing Jackpot about 42 days before your last frost date.
As Jackpot is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.
By our calculations, you should look at planting out Jackpot about 14 days after your last frost date.