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Description
Coreopsis Grandiflora, also known as Large-flowered Tickseed or Sunray, is a perennial plant that belongs to the Asteraceae family. It is native to North America and can be found in meadows, prairies, and open woods. This plant is known for its bright yellow flowers that bloom from late spring to early summer. The flowers are daisy-like and have a diameter of 2-3 inches. The plant has a bushy and upright growth habit, and it can grow up to 2 feet tall.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Angiospermae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Coreopsis |
Appearance
Coreopsis Grandiflora has lance-shaped leaves that are lobed and toothed. The leaves are bright green and grow up to 4 inches long. The flowers are bright yellow and have a dark center. They bloom from late spring to early summer and attract bees and butterflies. The plant has a bushy and upright growth habit, and it can grow up to 2 feet tall. The plant produces seeds after flowering, which can be collected and sown to propagate new plants.
Care Guide
Coreopsis Grandiflora is a low-maintenance plant that is easy to care for. Here are some care tips for this plant:
Water: Water the plant regularly, especially during hot and dry weather. Make sure the soil is moist but not waterlogged.
Fertilization: Fertilize the plant once a month during the growing season with a balanced fertilizer.
Soil: The plant prefers well-drained soil that is rich in organic matter. It can tolerate a wide range of soil types, including sandy and clay soils.
Sunlight: The plant prefers full sun but can tolerate partial shade.
Hardiness Zones: Coreopsis Grandiflora is hardy in USDA zones 4-9.
Common Pests & Diseases
Coreopsis Grandiflora is relatively pest and disease-resistant. However, it can be affected by some common pests and diseases, including:
Aphids: These small insects can suck the sap from the plant and cause stunted growth and yellowing leaves. They can be controlled with insecticidal soap or neem oil.
Spider mites: These tiny pests can cause yellowing leaves and webbing on the plant. They can be controlled with a strong spray of water or insecticidal soap.
Powdery mildew: This fungal disease can cause a white powdery coating on the leaves and stems. It can be prevented by providing good air circulation and avoiding overhead watering.
Habitat
Coreopsis Grandiflora is native to North America and can be found in meadows, prairies, and open woods. It prefers well-drained soil and full sun but can tolerate partial shade. The plant is tolerant of drought and can grow in a wide range of soil types.
Question and Answer
Q: Is Coreopsis Grandiflora deer-resistant?
A: Yes, Coreopsis Grandiflora is deer-resistant.
Q: How often should I water my Coreopsis Grandiflora?
A: Water the plant regularly, especially during hot and dry weather. Make sure the soil is moist but not waterlogged.
Q: Can I grow Coreopsis Grandiflora in a container?
A: Yes, Coreopsis Grandiflora can be grown in a container. Make sure the container has drainage holes and use a well-draining potting mix.
Q: How do I propagate Coreopsis Grandiflora?
A: Coreopsis Grandiflora can be propagated by seed or division. Collect the seeds after flowering and sow them in the fall. Divide the plant in the spring or fall by digging up the clump and separating the roots.
Related Plants
Here are some related plants to Coreopsis Grandiflora:
- Coreopsis lanceolata
- Coreopsis verticillata
- Coreopsis tinctoria
- Coreopsis auriculata
References
- “Coreopsis grandiflora.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b419. Accessed 15 Nov. 2021.
- “Coreopsis grandiflora.” NC State Extension, 28 Nov. 2018, content.ces.ncsu.edu/coreopsis-grandiflora. Accessed 15 Nov. 2021.
- “Coreopsis grandiflora.” The Morton Arboretum, www.mortonarb.org/trees-plants/tree-plant-descriptions/coreopsis-grandiflora. Accessed 15 Nov. 2021.
