How to Prune commonName:"tickseed 'Cosmic Eye'"?
Deadhead for continuous flowering and cut back in winter.

commonName:"tickseed 'Cosmic Eye'" · Coreopsis 'Cosmic Eye'
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
Deadhead for continuous flowering and cut back in winter.