Keep in mind when planting that Chinese orange is thought of as tender, so it is imperative to wait until temperatures are mild before planting out of doors.
Growing Chinese orange from seed
Start seeds indoors six weeks before last frost date.
Transplanting Chinese orange
Plant to the first set of true leaves to promote strong root growth.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Chinese orange is a tender plant.