One of the most loved perennials, C. 'Zagreb' is an excellent performer with bright golden-yellow flowers (a deeper yellow than 'Moonbeam') blooming from early through late summer. Coreopsis is the toughest, most durable perennial available.
Genus Notes - Coreopsis
Koris and opsis, Greek for "bug" and "like", were combined to name Coreopsis after its seed's similarity to a small bug. With a magnifying glass, it is possible to distinguish each of the approximately 100 species by the seed alone.
The manner in which each species presents its flowers indicates the nature of its habitat in the wild. Those with flowers held close to a mass of foliage are found in open woods and clearing. Those with flowers held high above the foliage on long stems are found in prairies and thickets--this formation allows the flowers to reach above grasses and other competing vegetation so that they may win the attention of pollinators.
Wonderfully low-maintenance yet high-performance plants, Coreopsis grow in almost any well-drained soil, bloom like annuals, and make delightful cut flowers. All they need is lots of sun. Shear off the spent blossoms to keep more coming.