Primary propagation methods for spirea include softwood cuttings, hardwood cuttings, and division. Key factors for success are adequate light, consistent moisture, and well-drained fertile soil. Softwood cuttings are taken in late spring to early summer, while hardwood cuttings are best in late fall to winter. Division is preferred in early spring or fall. Propagation difficulty is moderate, with challenges in root development consistency.
Steps for softwood cuttings:
1.Select healthy, non-flowering shoots.
2.Cut 4-6 inch stems, just below a node.
3.Remove the lower leaves and dip in rooting hormone.
4.Plant in a mix of peat and perlite, ensuring high humidity.
5.Keep in indirect sunlight and maintain moisture.
6.Transplant once rooted after a few weeks.
For division:
1.Dig up the parent plant in spring/fall.
2.Gently separate root clumps into sections.
3.Replant sections at the same soil depth as the original.