Coreopsis

Description

Coreopsis is a genus of flowering plants in the family Asteraceae, native to North and South America. These plants are commonly known as tickseed or calliopsis, and they are popular for their bright and colorful flowers that bloom in the summer and fall. Coreopsis are easy to grow and care for, making them a great choice for both beginner and experienced gardeners.

Taxonomic Information

Appearance

Coreopsis plants can range in height from six inches to four feet, depending on the species. They have bright, daisy-like flowers in shades of yellow, orange, pink, and red. The leaves are typically green and lance-shaped, with a slightly fuzzy texture. Some species have variegated or dark red foliage, adding to their visual appeal. The flowers bloom in the summer and fall, and they attract bees, butterflies, and other pollinators.

Care Guide

Coreopsis are easy to grow and care for, making them a great choice for beginner gardeners. Here are some tips for keeping your Coreopsis healthy and thriving:

Water

Coreopsis plants prefer well-draining soil that is kept evenly moist. Water your plants deeply once a week, or more frequently during hot, dry weather.

Fertilization

Coreopsis plants do not require heavy fertilization, but they will benefit from a light application of balanced fertilizer in the spring. Avoid over-fertilizing, as this can cause the plants to become leggy and weak.

Soil

Coreopsis plants prefer well-draining soil that is slightly acidic. If your soil is heavy or clay-like, amend it with compost or sand to improve drainage.

Sunlight

Coreopsis plants require full sun to bloom their best. Plant them in a location that receives at least six hours of direct sunlight each day.

Hardiness Zones

Most Coreopsis species are hardy in USDA zones 4-9, although some species are more cold-tolerant than others. Check the specific requirements for your chosen variety before planting.

Common Pests & Diseases

Coreopsis plants are relatively disease-resistant, but they may be susceptible to powdery mildew or rust in humid conditions. To prevent these issues, avoid overhead watering and plant your Coreopsis in a location with good air circulation. Coreopsis may also be attacked by spider mites or aphids, which can be treated with insecticidal soap or neem oil.

Habitat

Coreopsis plants are native to North and South America, and they are commonly found in meadows, prairies, and other open areas. They prefer well-draining soil and full sun, and they are drought-tolerant once established.

Question and Answer

Q: How do I deadhead Coreopsis?

A: Deadhead Coreopsis by removing spent flowers as soon as they fade. This will encourage the plant to produce more blooms and extend the blooming season.

Q: Can I grow Coreopsis in a container?

A: Yes, Coreopsis can be grown in containers as long as they have adequate drainage and are planted in well-draining soil. Choose a compact variety that will not outgrow the container, and water regularly to ensure the soil stays moist.

Q: How often should I fertilize Coreopsis?

A: Coreopsis plants do not require heavy fertilization, but they will benefit from a light application of balanced fertilizer in the spring. Avoid over-fertilizing, as this can cause the plants to become leggy and weak.

Q: Do Coreopsis attract pollinators?

A: Yes, Coreopsis flowers are attractive to bees, butterflies, and other pollinators. Planting Coreopsis in your garden can help support local pollinator populations.

Related Plants

Here are some related plants to Coreopsis that you may also enjoy in your garden:

• Achillea (yarrow)
• Echinacea (coneflower)
• Helianthus (sunflower)
• Liatris (blazing star)
• Rudbeckia (black-eyed Susan)

References

• “Coreopsis.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=h410
• “Coreopsis.” North Carolina State University. https://content.ces.ncsu.edu/coreopsis
• “Coreopsis.” The Old Farmer’s Almanac. https://www.almanac.com/plant/coreopsis