Keep in mind when planting that First Ladies is thought of as very hardy, so this plant will tend to survive through freezing conditions. First Ladies needs a loamy soil with a ph of 6.0 to 7.0 (weakly acidic soil to neutral soil).
By our calculations, you should look at sowing First Ladies about 56 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as First Ladies is a very hardy plant.