Coreopsis Gigantea

Description

Coreopsis Gigantea, also known as Giant Coreopsis or Leptosyne gigantea, is a perennial flowering plant that belongs to the Asteraceae family. It is native to California and can be found in the coastal regions of the state, from San Francisco to Baja California. This plant can grow up to 10 feet tall and 4 feet wide, making it an excellent addition to any garden or landscape.

Taxonomic Information

Appearance

Coreopsis Gigantea has large, yellow daisy-like flowers that are 3-4 inches in diameter. The flowers are borne at the end of long stems and bloom from late spring to early summer. The leaves of this plant are green and deeply lobed, and they can grow up to 8 inches long. The stem of the plant is woody and can be quite thick, especially at the base.

Care Guide

Coreopsis Gigantea is a low-maintenance plant that is easy to care for. Here are some tips for caring for this plant:

• Water: This plant prefers well-draining soil and does not like to be overwatered. Water the plant deeply once a week during the growing season, and reduce watering during the winter months.
• Fertilization: Use a balanced fertilizer once a month during the growing season to encourage healthy growth and blooming.
• Soil: This plant prefers well-draining soil that is rich in organic matter. A sandy loam soil is ideal.
• Sunlight: Coreopsis Gigantea prefers full sun to partial shade. It can tolerate some shade, especially in hot, dry climates.
• Hardiness Zones: This plant is hardy in USDA zones 8-10.

Common Pests & Diseases

Coreopsis Gigantea is generally resistant to pests and diseases. However, here are some common issues that may arise:

• Aphids: These small insects can suck the sap from the plant, causing it to become weak and stunted. Use an insecticidal soap to control aphids.
• Spider Mites: These tiny arachnids can cause yellowing and stippling on the leaves of the plant. Use a miticide to control spider mites.
• Powdery Mildew: This fungal disease can cause a white powdery coating on the leaves of the plant. Use a fungicide to control powdery mildew.

Habitat

Coreopsis Gigantea is native to California and can be found in the coastal regions of the state, from San Francisco to Baja California. This plant prefers to grow in sandy or rocky soil and can be found in coastal scrub, chaparral, and grasslands.

Question and Answer

• Q: How tall can Coreopsis Gigantea grow?
• A: Coreopsis Gigantea can grow up to 10 feet tall.
• Q: What is the blooming season of Coreopsis Gigantea?
• A: This plant blooms from late spring to early summer.
• Q: What is the hardiness zone for Coreopsis Gigantea?
• A: This plant is hardy in USDA zones 8-10.
• Q: Does Coreopsis Gigantea prefer full sun or partial shade?
• A: This plant prefers full sun to partial shade.

Related Plants

• Coreopsis grandiflora
• Coreopsis tinctoria
• Coreopsis verticillata
• Coreopsis lanceolata

References

• “Coreopsis gigantea.” Las Pilitas Nursery. Accessed August 23, 2021. https://www.laspilitas.com/nature-of-california/plants/leptosyne-gigantea.
• “Coreopsis gigantea.” San Marcos Growers. Accessed August 23, 2021. https://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=1770.
• “Leptosyne gigantea.” Calflora. Accessed August 23, 2021. https://www.calflora.org/app/taxon?crn=3116.