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Whorled Coreopsis
Coreopsis verticillata
Easy · Beginner friendlyAbout Whorled Coreopsis
Threadleaf Coreopsis is a native perennial of the eastern and southeastern US, 18–30 inches tall, with fine thread-like foliage and masses of small golden-yellow daisy flowers from early summer to frost. Drought-tolerant, deer-resistant, and a pollinator favorite. The cultivar 'Moonbeam' was Perennial Plant of the Year in 1992 and remains one of the most planted perennials in American gardens. 'Zagreb' offers a slightly more compact golden form.
- Drought-tolerant
- Deer-resistant
- Native
- Pollinator-friendly
How to care for Whorled Coreopsis
Watering
- Springevery 5 days
- Summerevery 4 days
- Fallevery 7 days
- Winterpause watering
Soil · Well-draining
- Top dressingPine bark mulch10%
- Main mixPotting soil + perlite 2:170%
- DrainageLECA / gravel20%
Never skip the drainage layer — standing water is the top cause of root rot.
FERTILIZER
- Springevery 30 days
- Summerevery 30 days
At a Glance
- NativeNorth America
- Height1.5–3 ft (0.5–0.9 m)
- Spread1.5–2 ft (0.5–0.6 m)
- Flower colorYellow
- Foliage colorGreen
- SoilWell-drained, Loamy
- LocationsYard
Bloom time
BLOOM CYCLE
Peak bloom
Jun–Nov
Golden daisies early summer to frost
Toxicity
No toxicity has been reported for this plant. Still, it is wise to keep pets from chewing on any houseplant.
Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
DISTRIBUTION
- Native
- Introduced
- North America
History
Coreopsis verticillata ranges from Maryland to Florida on sandy or rocky soils. Linnaeus named it in 1753 referencing its whorled (verticillate) leaf arrangement. It remained a wild curiosity until the late 20th century when the cultivar 'Moonbeam', a pale primrose-yellow sport, appeared in American nurseries.
The Perennial Plant Association named it Perennial Plant of the Year in 1992, triggering explosive commercial success. 'Zagreb' with deeper gold flowers followed. These cultivars transformed sunny border design throughout North America and Europe, offering long bloom, drought tolerance, and fine-textured foliage.
Molecular studies suggest 'Moonbeam' may be a hybrid rather than pure verticillata, but the name has become horticulturally entrenched. Native to the eastern US. 'Moonbeam', discovered and introduced to commerce in the 1980s, was named Perennial Plant of the Year in 1992 by the Perennial Plant Association, cementing threadleaf coreopsis as a top American perennial.
Symbolism & meaning
What It Symbolizes
Whorled Coreopsis is always cheerful, its threadlike leaves and golden daisies bobbing through the heat of summer with apparent indifference to drought. Resilience runs through its roots — this is a plant that thrives on a little neglect and rewards forgetfulness with another flush of bloom. Its meaning is honest, durable optimism: sunshine that does not require constant tending.
- Always cheerful — never-ending sunny blooms
- Resilience — thrives on neglect
Where the Name Comes From
Genus from Greek 'koris' (bug) and 'opsis' (appearance) for the seed shape; 'verticillata' means 'whorled' for the leaf arrangement.
Uses & Fun Facts
- Yellow daisies feed bees and butterflies all summer
- Airy stems prized for casual summer bouquets
Related plants
More Coreopsis plants
Large-Flowered TickseedCoreopsis grandiflora
Lance-Leaved CoreopsisCoreopsis lanceolata
Rose CoreopsisCoreopsis rosea
Plants with similar care
Chinese AbeliaAbelia chinensis
Fragrant AbeliaAbelia mosanensis
Large-Flowered AbeliaAbelia uniflora
Glossy AbeliaAbelia x grandiflora
Frequently asked questions
How often should I water Whorled Coreopsis?
Water about every 5 days during the growing season, and always let excess water drain away.
How much light does Whorled Coreopsis need?
Full sun: 6+ hrs direct. Watch the leaves — scorching or stretching means the light needs adjusting.
Is Whorled Coreopsis toxic to cats or dogs?
No toxicity has been reported for this plant. Still, it is wise to keep pets from chewing on any houseplant. Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
Is Whorled Coreopsis easy to grow?
Yes — it is considered an easy, beginner-friendly plant.
When does Whorled Coreopsis bloom?
It typically blooms Jun–Nov in the Northern Hemisphere.
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