Coreopsis lanceolata is a reliable blooming and drought tolerant winner for sandy, nutrient-poor soils. It likes good drainage, acidic to neutral soil, in full sun with room to spread. Coreopsis will grow one to two feet high with narrow leaves in a rounded growth habit. Deadheading or cutting the whole plant back in midsummer will extend blooming until frost. It is easy to start from seed, which mature approximately four weeks after flowers die off and the seeds do not require cold stratification. The plant can also be divided in fall or spring, this will help with overcrowding.
Goldfinches and Juncoes love to eat the seeds over the winter and the flowers attract butterflies and bees.
Coreopsis is a staple in my garden, but this year I purchased Coreopsis verticillata 'Moonbeam'.
The fern like leaves is what attracted me to this plant along with its' pale yellow flowers. It is not a long lived perennial and is very late to make an appearance in spring, but that is Ok as I do not cut back any of my perennials in the autumn. I leave the seedheads for the birds.
Both are good selections if you require a drought tolerant plant for a sunny location.