Threadleaf Coreopsis
Coreopsis verticillata
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Low to moderate
Humidity
Average to dry
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic to pets and humans
The Story
Plant Bio
Coreopsis verticillata, commonly known as the threadleaf coreopsis, is a perennial plant known for its fine, threadlike leaves and bright yellow flowers. It is drought-tolerant and well-suited for sunny locations. This species is notable for its long blooming period and ability to thrive in poor soils, making it a popular choice for low-maintenance gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Select a sunny location with well-draining soil.
- Tuck seeds lightly into the soil surface and water gently.
- Maintain consistent moisture during germination, which takes 10-14 days.
- Transplant seedlings once they are 3 inches tall into their permanent spot.
- Allow 12-24 inches between plants for optimal growth.
- Apply mulch to retain moisture and suppress weeds.
Pro Tip
Use organic compost to enrich soil and promote vibrant blooms.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 💧
- Deadhead spent flowers to encourage more blooms 🌸
- Divide clumps every 2-3 years to maintain vigor
- Mulch annually to conserve moisture and control weeds
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t fertilize with high nitrogen, as it promotes foliage over flowers
- Refrain from heavy pruning in late fall to prevent winter damage
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Threadleaf Coreopsis questions
What zones can Threadleaf Coreopsis grow in?
Threadleaf Coreopsis is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Threadleaf Coreopsis deer resistant?
Yes — Threadleaf Coreopsis is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Threadleaf Coreopsis bloom?
Threadleaf Coreopsis typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Threadleaf Coreopsis need full sun?
Threadleaf Coreopsis does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Threadleaf Coreopsis drought tolerant?
Yes — once established (usually after the first full season), Threadleaf Coreopsis handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Coreopsis to compare
Plains Coreopsis
Coreopsis tinctoria 'Desert Coral'
Sassy Saffron Tickseed
Coreopsis grandiflora 'Sassy Saffron'
Tickseed 'Sweet Tart'
Coreopsis tinctoria 'Sweet Tart'
Enchanted Eve Li'l Bang Tickseed
Coreopsis grandiflora 'Enchanted Eve Li'l Bang'
Prairie Coreopsis
Coreopsis palmata
Moonbeam Tickseed
Coreopsis verticillata 'Moonbeam'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Threadleaf Coreopsis with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
