How to Propagate Van Houtte's spiraea?
Propagate by softwood or semi-ripe cuttings in spring to late summer or hardwood cuttings in winter

Van Houtte's spiraea · Spiraea × vanhouttei
Also known as: bridal wreath
Grow in moist but well-drained soil in full sun or light shade
Propagate by softwood or semi-ripe cuttings in spring to late summer or hardwood cuttings in winter