Kossak likes a position of full sun and remember to water moderately. Keep in mind when planting that Kossak is thought of as very hardy, so this plant will tend to survive through freezing conditions.
Growing Kossak from seed
By our calculations, you should look at sowing Kossak about 35 days before your last frost date.
Transplanting Kossak
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Kossak is a very hardy plant.