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