Coreopsis grandiflora aka Large Flowered Tickseed

Taxonomy

Coreopsis grandiflora, also known as large-flowered tickseed, is a bushy and clump-forming perennial plant in the family Asteraceae. Native to North America, it can be found in eastern Canada and various parts of the United States, particularly the south-central region. This perennial herb grows up to 60 cm tall and produces vibrant yellow ray and disc flowers. Its natural habitats include prairies, glades, open woods, thickets, roadsides, and open ground. Coreopsis grandiflora is known to attract bees and butterflies, making it a valuable plant for pollinators. In China, it is widely cultivated and has become naturalized. In the UK, the cultivar 'Early Sunrise' has been recognized with the Royal Horticultural Society's Award of Garden Merit. With elongated lance-shaped green leaves, this early-flowering cultivar offers abundant daisy-like semi-double golden-yellow flowers with toothed petals, providing blooms from spring to late summer. The plant's height can range from 46 to 120 cm, and the flowers can be yellow or yellow-and-red bicolor. Coreopsis grandiflora belongs to the Coreopsis genus, which includes around 75-80 species native to the Americas. The name Coreopsis is derived from Greek words meaning "bedbug" and "view," referring to the shape of the small and dry fruits that resemble insects.

Common names

Large Flowered Tickseed, Large Flower Tickseed, American Tickseed, Tickseed, Bigflower Tickseed

How to care for Large Flowered Tickseed

Difficulty

With a bit of knowledge and dedication, you can successfully care for Large Flowered Tickseed, making it a rewarding choice for those seeking a moderate challenge.

Water

Large Flowered Tickseed should be watered regularly, allowing the soil to dry out between waterings.

Soil

Large Flowered Tickseed loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Lighting

Large Flowered Tickseed thrives in bright and direct sunlight. To ensure your plant receives enough light to survive, place it less than one foot from a window. The current weather in your area may affect the placement in your home. For example, if you live in a region that has longer and more intense periods of sunlight, then you may want to place the plant farther away from the window to avoid direct sunlight and reduce the risk of sunburn. Alternatively, if you live in a region with relatively milder temperatures and less intense sunlight, then you may be able to place the plant closer to the window for increased exposure. Ultimately, the current weather in your area should be taken into consideration when determining the best placement for your American Tickseed.

Toxicity

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

Fertilizer

Repotting the Large Flowered Tickseed is necessary either when it has doubled in size or once every year, whichever happens first. With fresh potting soil replenished annually, the plant will receive all the necessary nutrients, rendering the use of fertilizer unnecessary. Keep in mind that the source of a plant's energy is the sun, not fertilizer.


More info:
Wikipedia