Coreopsis grandiflora, commonly known as Large-flower Tickseed or Common Coreopsis, is a vibrant, clump-forming perennial wildflower native to North America. Renowned for its abundant display of showy, bright yellow daisy-like blossoms, it is a popular addition to borders, cottage gardens, and pollinator-friendly landscapes.

This species features 2-to-3-inch wide golden-yellow flowers with notched petal tips atop slender, upright stems. The lower foliage consists of narrow, undivided green leaves, while the upper leaves are deeply lobed.

It grows in a mounded clump typically reaching 1 to 3 feet tall and wide and flowers continuously from late spring through late summer.

This species is highly attractive to bees, butterflies, and other beneficial pollinators.

Note that it often functions as a short-lived perennial (lasting 3–4 years). However, it reliably self-sows, ensuring its long-term presence in a garden landscape.

It will require full sun to bloom optimally and maintain sturdy stems, and prefers poor, dry-to-medium, well-drained soils (such as sandy, gravelly, or rocky environments). Avoid rich or heavily amended organic soils, which cause the plant to become floppy and shortens its life.