Sow
0.99 inches (2.54 cm) deep with a guideline distance of
2.97 inches (7.62 cm). For optimal germination, soil temperature should be a minimum of
4°C / 39°F.
By our calculations, you should look at sowing American wonder about 35 days before your last frost date.
American wonder is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.