Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Dart's Purple Rain is thought of as hardy, so this plant will survive close to or on freezing temperatures.
Growing Dart's Purple Rain from seed
By our calculations, you should look at sowing Dart's Purple Rain about 56 days before your last frost date.
Transplanting Dart's Purple Rain
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Dart's Purple Rain is a hardy plant.