Thorn likes a position of full sun and remember to apply water fairly sparingly. Keep in mind when planting that Thorn is thought of as hardy, so this plant will survive close to or on freezing temperatures. Thorn tends to grow best in a soil ph of between 5.5 and 7.0 meaning it does best in weakly acidic soil - neutral soil.
Growing Thorn from seed
By our calculations, you should look at sowing Thorn about 63 days before your last frost date.
Transplanting Thorn
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Thorn is a hardy plant.