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