https://abodelook.com/knowledge-hub/coreopsis-flower/Coreopsis flower
grows easily in most garden situations, in full sun, and in well-drained soil. Seed and/or start seeds indoors to be transplanted or direct sow. Water throughout establishment; once established, will tolerate drought. Removing plants after they have bloomed stimulates re-blooming. Don't use overly rich soil, it will diminish flowering. Coreopsis is a plant that, with little maintenance, will flower profusely from late spring through early fall.
Source:
https://abodelook.com/Abodelook