Species threadleaf coreopsis
bright yellow flowers with yellow-black center, and green leaves on light-green stems

threadleaf coreopsis

Coreopsis verticillata

Also Known As - whorled tickseed
Threadleaf coreopsis (Coreopsis verticillata) is an amazing flowering perennial species with unique features that set it apart. This low, bushy plant grows to a height of just 8 inches but has long, thread-like leaves and golden-yellow flowers that form a bright, star-like pattern. It blooms abundantly in summers and continues to flower until the first frost of winter. It's easy to maintain and Deadheading the flowers helps promote prolonged blooming. It's also tolerant to drought and will grow in a variety of soil conditions. The plant attracts beneficial pollinators like butterflies, making threadleaf coreopsis a great addition to any garden.

Cycle:

Herbaceous Perennial

Watering:

Minimum

Propagation:

Greenwood Cuttings

Hardiness Zone:

3 - 9

Flowers:

Yellow Flowers

Sun:

Full sun

Soil:

Rocky , gravelly , dry, Well-drained

Fruits:

brown Fruits In Summer Ready In Fall

Leaf:

Yes

Leaf Color:

green

Growth Rate:

High

Maintenance:

Low

Salt Tolerant:

Yes

Care Level:

Easy

watering

Threadleaf Coreopsis should be watered regularly, approximately once a week, allowing the soil to dry out slightly between waterings. Do not water during periods of prolonged rainfall or if the soil remains wet from irrigation. When watering, be sure to water thoroughly so that moisture reaches the entire root zone. Make sure the soil is damp but not soggy. Monitor your plant carefully and adjust watering frequency as needed.

sunlight

Threadleaf coreopsis, or Coreopsis verticillata, will thrive in an area with direct sunlight for at least 6–8 hours a day. This species prefers sunny spots that offer a mix of morning and afternoon sun. Avoid planting threadleaf coreopsis in shadier spots as the plant will have a weaker bloom and require more maintenance. This species should also be kept out of areas with overly wet soils as it does not tolerate excess moisture. Providing enough sunlight is crucial to keeping this plant vigorous and healthy so make sure it is exposed to at least 6–8 hours of sun each day throughout the growing season from late spring to early fall.

pruning

Threadleaf Coreopsis can be pruned to keep the clumps of the species looking tidy and attractive. It is best to prune the Threadleaf Coreopsis during early spring or late winter before the new season’s growth begins. Pruning at this time will help stimulate fresh new growth and keep plants from becoming too large. The plants should be pruned back to a height of 6 to 8 inches, removing the old, dead foliage and stems. Prune the Threadleaf Coreopsis when the plants are dormant and before the new season’s growth begins. This will help stimulate fresh growth and keep plants from becoming too large. Pruning back to 6 to 8 inches will help keep the clump of Threadleaf Coreopsis in an attractive shape for the entire growing season.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Threadleaf coreopsis typically starts flowering in late spring, usually in May or June.

Starts Flowering

Threadleaf coreopsis typically starts flowering in late spring, usually in May or June.

Harvest Fruit

Coreopsis verticillata typically blooms from June to August, so the best months to start harvesting the fruits would be July and August.

Hardiness Map