Large-flowered Coreopsis 'Sunray'

Coreopsis grandiflora 'Sunray'

Coreopsis grandiflora 'Sunray' is a perennial herbaceous plant that is relatively easy to care for. The following is information regarding this variety's growth characteristics, propagation methods, cultivation methods, garden uses, and major pests and diseases and control methods.

Growth Characteristics
- Size: Grows to a height of approximately 30–60 cm.
- Flowers: Blooms with bright yellow flowers in the summer; the double-flowered form gives a full, lush appearance.
- Leaves: Has thin, long leaves with a form characteristic of Rosaceae plants.
- Growing Environment: Thrives in sunny locations and prefers well-drained soil. It is relatively tolerant of dry environments.

Propagation Methods
- Seeds: Seeds can be sown directly in the spring, and the germination rate is generally good.
- Division: It can be propagated by dividing the roots of mature plants.

Cultivation Method
- Planting: It is best to plant in the spring, spacing them approximately 30 cm apart.
- Watering: Since it grows better in dry conditions, avoid overwatering. Water when the soil is slightly dry at the surface.
- Fertilizer: It is beneficial to apply an appropriate amount of base fertilizer during the growing season. Excessive fertilizer can actually be harmful.

Garden Use
- Landscape Creation: It is excellent as a foreground plant for perennial flowerbeds, and its yellow flowers pair well with other colors.
- Naturalization: Suitable for natural garden styles, it helps to bring out the feel of wildflowers.

Important Pests and Control Methods
- Diseases: It may occasionally contract powdery mildew, so ensure good ventilation and use appropriate pesticides if disease occurs.
- Pests: Aphids may occur; these can be controlled using eco-friendly insecticides or soapy water.

The large-flowered Coreopsis 'Sunray' is relatively easy to care for, making it a plant that even beginners can successfully grow. It can be used in various landscaping applications, adding vibrancy to the garden.

Plant Family	Asteraceae
Height	30~60cm
Spread	30~60cm
Colors	yellow
Bloom Period	May to August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Large-flowered Coreopsis 'Seon-up'
Coreopsis grandiflora 'Sun Up'

Goldenrod 'Cosmic Eye'
Coreopsis hybrid 'Cosmic Eye'