Sow
0.25 inches (0.64 cm) deep with a guideline distance of
0.98 inches (2.5 cm). Soil temperature should be kept higher than
20°C / 68°F to ensure good germination.
By our calculations, you should look at sowing HA-2502 about 60 days before your last frost date.
As HA-2502 is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.