Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Purple Prince is thought of as hardy, so Purple Prince will tend to go dormant or grow slowly over the winter months.
Growing Purple Prince from seed
By our calculations, you should look at sowing Purple Prince about 56 days before your last frost date.
Transplanting Purple Prince
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Purple Prince is a hardy plant.