Lanceleaf Coreopsis

Lanceleaf coreopsis (Coreopsis lanceolata), also called tickseed, is a bushy, clump-forming perennial with narrow, lance-shaped leaves and daisy-like yellow flowers held on long stalks. It typically grows to about 2 feet (61 cm) tall and occurs in prairies, fields and roadsides.

Sowing and propagation. Plants can be grown by seed sown in late winter, and they can also be divided in spring or autumn. Division may be needed every 2 to 3 years to keep plants vigorous.

Light and soil. It prefers full sun with moist, well-drained soil, though it will grow in partial shade. It thrives in sandy and rocky soils.

Watering. Keep it moist during spells of dry weather. It is resistant to drought once it is growing well.

Deadheading and cutting back. Deadheading spent flowers encourages more blooms and helps control self-seeding. Deadhead for continuous flowering and cut back in winter. Plants can be cut back hard if they become too sprawling.

It can be an aggressive self-seeder and can get weedy if not maintained. Growing it in too fertile soil can make it sprawl. Crown rot may occur if it is grown in moist, poorly drained soil. It may be susceptible to slugs and snails.

Lanceleaf coreopsis is listed as non-toxic for cats and for dogs.