How to Propagate rosilla?
Propagate by basal softwood cuttings in spring, or by division in spring or late autumn

rosilla · Helenium puberulum
Grow in full sun in fertile, moisture-retentive, humus-rich soil. Keep well watered in summer dry spells. Divide every two to three years to maintain vigour
Propagate by basal softwood cuttings in spring, or by division in spring or late autumn