Sow
0.25 inches (0.64 cm) deep with a guideline distance of
11.89 inches (30.48 cm).
By our calculations, you should look at sowing Burpee's Hybrid Mix about 21 days before your last frost date.
As Burpee's Hybrid Mix is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.