Sunpatiens are best planted directly into their pots or garden beds without additional soil or compost. The Sunpatiens require well-draining soil that can retain its moisture for longer periods of time. You should avoid adding compost or other soil amendments as they can cause root diseases in Sunpatiens. Sunpatiens prefer loose, well-draining soil with pH between 5.5 and 7.0. Soil with too much clay content can cause root diseases in Sunpatiens. You should use mulch on top of your soil as it helps retain moisture and improves soil fertility. Sunpatiens grow best in full sun or partial shade and require at least 6 hours of direct sunlight per day. They can survive with 3-4 hours of direct sunlight per day but it will not bloom as much as they would have grown under 6 hours of direct sunlight per day.