Coreopsis grandiflora Sunray

Coreopsis grandiflora 'Sunray', commonly called Tickseed, is a perennial plant with breathtakingly beautiful, bright yellow double or semi-double daisy-like flowers that bloom all summer long. It has a compact habit, which makes it an excellent choice for the front of borders and herbaceous borders. It is a low-maintenance plant that thrives in sunlight and well-draining soil. It is also an elegant and easy-to-grow plant that can even be grown in containers. 

Coreopsis grandiflora is a plant commonly found in North America, ranging from California to New Mexico and up to the Great Lakes. It's a perennial plant that forms a rounded basket-like shrub with beautiful, intense green foliage that sheds seasonally. It grows quickly and spreads through rhizomes. 

From June through August, the plant produces solitary heads that measure 10cm in diameter on slightly hairy stems. 'Sunray' is a cultivar of Coreopsis grandiflora with double to semi-double flowers that are shorter than the typical variety.

The leaves are lanceolate and opposite, measuring 10 cm long. They're often incised at the base and almost sessile. The flowering period is from June to August. 

Sunray Coreopsis is a plant that requires specific conditions to grow and bloom well. It prefers soil that is porous, gravelly, or sandy and that is moist, well-drained, slightly acidic, neutral, or slightly alkaline. This plant does not do well in heavy soils or during winter moisture. It needs full sun to bloom properly. 

To keep the plant healthy and blooming, it's best to remove faded flowers regularly and, in July, encourage autumn reblooming. By doing this, you can help prolong the life of the plant and keep it looking beautiful. 

Coreopsis grandiflora is a perennial plant that can be used in various ways. It can be planted in a rock garden or on a slope with other plants like wallflowers, love-in-a-mist, and wild flax. It can also be grown in a herbaceous border along with other plants like Teucrium chamaedrys or x lucidrys, thyme, and santolines. The plant is perfect for naturalising a meadow or a wild area of a garden. When planted in a pot or container, it blooms continuously from the first year. For a beautiful summer display in the ground or large pots, it can be paired with Calamintha glandulosa and Nepeta 'Dawn to dusk' and requires very little water. It is also an excellent choice for summer bouquets, adding a warm and cheerful touch to the house.