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Coreopsis verticillata
Whorled Coreopsis
Coreopsis verticillata
Coreopsis verticillata, commonly known as threadleaf coreopsis or whorled coreopsis, is a popular perennial known for its delicate, thread-like foliage and abundant, daisy-like yellow flowers. It blooms from early summer to fall, attracting pollinators like bees and butterflies. This plant is relatively low-maintenance, drought-tolerant, and adaptable to various soil conditions.
CategoryDetails
Plant TypePerennial plant
Duration to maturity6 months to harvest
Estimated Plant Lifespan3 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: animal

Notes: Attracts bees and butterflies for pollination.

Watering Requirements

Method: Top watering

Frequency: Water regularly when soil is dry to the touch, especially during hot and dry periods.

Notes: Tolerates some drought once established.

Humidity Requirements

Level: moderate

Care InstructionsDeadheading spent flowers can encourage more blooms and prevent self-seeding.
Temperature Range

Min: -20°C

Max: 35°C

Alternative NamesThreadleaf Coreopsis
Echinacea purpurea
purple coneflower
Echinacea purpurea
Both plants enjoy similar growing conditions and attract pollinators. The purple coneflowers provide a contrasting color and shape to the threadleaf coreopsis's yellow blooms.
Lavandula angustifolia
Common Lavender
Lavandula angustifolia
Lavender's silvery foliage and purple flowers complement the yellow coreopsis, and both thrive in sunny, well-drained locations.
Rudbeckia hirta
black-eyed Susan
Rudbeckia hirta

While visually appealing together, both species have similar spreading habits and may compete for resources if planted too closely.

Aphids

Aphids can infest coreopsis, causing distorted growth and reduced flowering. They suck sap from the plant, weakening it and potentially spreading diseases.

Powdery Mildew

Powdery mildew can appear as a white, powdery coating on the leaves and stems, especially in humid conditions. It can weaken the plant and make it more susceptible to other problems.

Steps:

    • Divide established clumps in spring or fall by digging up the plant and separating it into smaller sections with healthy roots and shoots.
    • For cuttings, take stem cuttings in spring or summer and root them in moist potting mix.

Neem oil

A natural insecticide effective against aphids and other common garden pests.

Compost

Improves soil health and provides nutrients for healthy growth.