How to Propagate Coreopsis lanceolata?
Propagate by seed in late winter, by division in spring or autumn and basal root cuttings in spring.

Coreopsis lanceolata · Coreopsis lanceolata
Will grow well in fertile, well-drained soil in partial shade but preferably in full sun. Will need to be kept moist during spells of dry weather.
Propagate by seed in late winter, by division in spring or autumn and basal root cuttings in spring.