Sow
0.47 inches (1.2 cm) deep with a guideline distance of
0.99 inches (2.54 cm). For optimal germination, soil temperature should be a minimum of
13°C / 55°F.
By our calculations, you should look at sowing Sparkler 3 about 28 days before your last frost date.
Sparkler 3 is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.