How to Propagate kousa?
Propagate by semi-hardwood or hardwood cuttings or grafting

kousa · Cornus kousa
Also known as: Szechuan strawberry
Grow in fertile, humus-rich, well-drained, neutral to acid soil in sun or light shade. For more advice, see flowering dogwood cultivation
Propagate by semi-hardwood or hardwood cuttings or grafting