Sow at a depth of approx.
0.23 inches (0.6 cm) and aim for a distance of at least
1.95 inches (5.0 cm) between French marigold plants. For optimal germination, soil temperature should be a minimum of
15°C / 59°F.
By our calculations, you should look at sowing Little Devil Orange about 49 days before your last frost date.
Little Devil Orange is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.