Keep in mind when planting that Blosser/Palatable is thought of as tender, so it is really important to ensure that the outside temperature is well above freezing before planting or moving outdoors. Blosser/Palatable requires a soil ph of 6.1 - 6.5 meaning it does best in weakly acidic soil.
Soil temperature should be kept higher than
15°C / 59°F to ensure good germination.
By our calculations, you should look at sowing Blosser/Palatable about 84 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Blosser/Palatable is a tender plant.