Keep in mind when planting that Green castle is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside.
Growing Green castle from seed
Start seeds indoors six weeks before last frost date.
Transplanting Green castle
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 Green castle is a tender plant.