Keep in mind when planting that Amish Cockscomb is thought of as half hardy, so remember to watch your frost dates and ensure you have this plant protected when the temperature dips.
By our calculations, you should look at sowing Amish Cockscomb about 21 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Amish Cockscomb is a half hardy plant.