Tickseed Coreopsis verticillata Crème Brûlée = 'Crembru' (PBR)

Water

Thread leaf coreopsis should be watered regularly to maintain moist but not waterlogged soil, especially during its first growing season to establish a deep, extensive root system. Once established, it is fairly drought tolerant and requires less frequent watering. Aim for about 1 inch of water per week, either from rainfall or supplemental watering. During hot and dry periods, you may need to water twice a week, providing about 0.5 gallons per plant each time. Overwatering or poorly drained soil can lead to root rot, so ensure the soil drains well.

Light

Thread leaf coreopsis thrives best in full sun, which means it should receive at least 6 to 8 hours of direct sunlight daily. The plant can tolerate light shade, but too much shade will result in fewer flowers and a leggy growth habit. The ideal spot for planting thread leaf coreopsis is in an area where it can bask in the sun's rays without any obstruction from larger plants or structures.

Temperature

Thread leaf coreopsis is hardy and can tolerate a wide range of temperatures, typically from about -30°F to 100°F. The ideal growth temperatures are between 60°F and 75°F. It can survive light frosts, but prolonged exposure to temperatures below freezing will cause the plant to die back in winter, returning in the spring if the root system is well-established and insulated.

Pruning

Prune thread leaf coreopsis to promote vigorous growth and increase flower production. Deadheading, or removing spent flowers, will encourage the plant to produce more blooms. Cut the plants back by about one-third in midsummer if flowering diminishes or the plants look tired. The best time to prune is after the plant has finished its first flush of blooming, usually in late summer or early fall.

Cleaning

As needed

Soil

Threadleaf Coreopsis thrives in well-draining, fertile soil with a pH ranging from 5.8 to 6.8. A good mix can be created with garden soil, compost, and some sand to enhance drainage. Avoid soil that holds too much moisture as it can lead to root rot.

Repotting

Threadleaf Coreopsis, being a perennial, does not typically require frequent repotting. It should be repotted or divided every 2-3 years to maintain vigor and to control its spread in the garden.

Humidity & Misting

Threadleaf Coreopsis prefers moderate to low humidity conditions and is quite tolerant of dry air, making it suitable for a wide range of climates without needing to significantly alter environmental humidity levels.

Suitable locations

• Indoor

  Ensure bright light, well-draining soil, and moderate watering.

• Outdoor

  Plant in full sun, well-draining soil, and space 12-18 inches apart.

• Hardiness zone

  3-9 USDA

Life cycle

Coreopsis verticillata Crème Brûlée, commonly known as Threadleaf Coreopsis or Whorled Coreopsis, starts its life cycle from a seed, which when sown, germinates into a small seedling. As it grows, it develops a fibrous root system and fine, feathery foliage characteristic of the cultivar. It enters the vegetative stage wherein it forms a mound of delicate, needle-like leaves and becomes hardy as it matures. The plant then progresses to the flowering stage in early to mid-summer when it produces numerous small, daisy-like flowers with a creamy yellow hue that attract pollinators. After pollination, it sets seeds later in the season, which can self-sow, renewing the life cycle. Once established, this perennial enters a period of dormancy during the winter, to re-emerge and grow again in the spring.

Propogation

• Propogation time

  Early Spring

• Coreopsis verticillata 'Crème Brûlée' is often propagated by division, which is commonly done in the spring or early fall. To propagate by division, first, the gardener should water the plant well to ensure the soil is moist, which facilitates easier separation of the root ball. Afterward, the plant should be carefully dug up with a shovel, ensuring a generous amount of soil is kept around the roots. Using either hands or a gardening tool like a knife, the root ball should then be divided into smaller sections, each with several shoots and a healthy portion of roots. The divisions can be replanted at the same depth they were originally growing at, spacing them about 15 to 18 inches (approximately 38 to 45 centimeters) apart to allow for adequate growth. After replanting, the divisions should be watered thoroughly to help establish them in their new locations.