Large-flowered goldenrod

Coreopsis grandiflora

Let's learn about the various characteristics of Coreopsis grandiflora.

Growth Characteristics
Coreopsis grandiflora is a perennial herbaceous plant belonging to the Asteraceae family that blooms with showy yellow flowers during the summer. It grows to a height of approximately 30 to 60 cm and thrives in well-drained soil that prefers sunlight. It exhibits relatively strong vitality even in dry environments.

Propagation Methods

It is primarily propagated by seeds, which can be sown directly in spring or autumn. It can also be propagated by root division. Root division is best performed in early spring or late autumn.

Cultivation Methods
 - Sunlight: Cultivate in a location with sufficient sunlight.
 - Soil: It prefers well-drained soil. Improve drainage by mixing in sand or similar materials as needed.
 - Watering: Although it is relatively resistant to drought, water thoroughly during prolonged droughts.
 - Fertilizer: It is recommended to apply a small amount of slow-release fertilizer in the spring. Use in Gardens

The showy flowers of the Goldenrod are widely used as ornamental plants in gardens, parks, and along roadsides. The yellow flowers harmonize with other plants, enhancing the beauty of the landscape.

Important Pests and Control Methods
While Goldenrod is relatively resistant to pests and diseases, the following issues may occur:
 - Pink Disease: Root rot can hinder growth. It is important to improve drainage and avoid excessive moisture.
 - Aphids: If aphids appear, they can be removed immediately by washing them with water or soapy water. In severe cases, appropriate insecticides can be used.

Control Methods
- Regularly observe the plants to quickly detect early pests and diseases.
- Natural control methods include using natural enemies or plant extracts. If appropriate chemical control is necessary, use them safely according to the instructions.

By utilizing this information, you will be able to grow healthy Goldenrod grandiflora.

Plant Family	Asteraceae
Height	30~90cm
Spread	30~90cm
Colors	yellow
Bloom Period	May to August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Large-flowered Coreopsis 'Early Sunrise'
Coreopsis grandiflora 'Early Sunrise'

Goldenrod 'Star Cluster'
Coreopsis hybrid 'Star Cluster'