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 Red Delicious Hybrid about 32 days before your last frost date.
As Red Delicious Hybrid is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.