Also known as Tickseed · 4.1k saves
Coreopsis
Coreopsis, the genus most gardeners know as tickseed. We track 63 varieties; the ones most used by real gardeners.
The 24 most-saved Coreopsis varieties
See all 63 Coreopsis varieties →Search this genus →
4 species of Coreopsis
Each one is a parent of the varieties above.
Track your Coreopsis in Sow
Save the Coreopsis you grow and get care reminders timed to your zone.
How to grow Coreopsis
Whats common across all Coreopsis varieties in our catalog — drawn from the care records of the 40 most-grown of them.
The Coreopsis year
- DeadheadMay–August93% of varieties
Remove spent blooms regularly to encourage continuous flowering and control self-seeding
- DivideMarch and September78% of varieties
Divide clumps every 2-3 years to maintain plant vigor
- Spring CleanupFebruary73% of varieties
Cut back old, dead stems to the ground before new growth starts
- PruneJuly48% of varieties
Cut back plants to 2-3 inches after flowering ceases or heavy frost
- PlantMarch, April, September and October33% of varieties
Sow seeds directly or plant transplants after the last hard frost
- FertilizeMarch33% of varieties
Apply a light, balanced fertilizer only if soil is extremely poor
Do
- Water deeply once a week during dry spells 🌱
- Water deeply during dry spells 🌱
- Water deeply once a week during dry periods 🌱
- Deadhead spent flowers to encourage more blooms
- Divide clumps every 2-3 years to maintain vigor
Avoid
- Avoid overwatering to prevent root rot ❌
- Avoid overwatering, which can cause root rot ❌
- Avoid overwatering which can lead to root rot ❌
- Don’t prune in late fall or winter
What goes wrong with Coreopsis
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Sticky residue and distorted leaves | Spray with insecticidal soap or neem oil |
| Spider mites | Fine webbing and speckled leaves | Use organic miticides or rinse with water |
| Spider Mites | Fine webbing and speckled leaves | Increase humidity and spray with insecticidal soap |
| Powdery mildew | White powdery coating on leaves | Apply fungicide or improve air circulation |
| Powdery mildew | White powder on leaves | Improve air circulation and apply fungicide |
| Powdery Mildew | White powder on leaves | Improve air circulation and apply fungicide |
| Root Rot | Wilting and discolored roots | Ensure well-draining soil and avoid overwatering |
Making more Coreopsis
Seed
- Tuck seeds 1/4 inch deep in prepared soil.
- Keep soil moist until germination, about 14 days.
- Thin seedlings to 12 inches apart after emergence.
Division
- Dig up mature plants in early spring or fall.
- Separate clumps with a sharp knife or spade.
- Replant divisions immediately at same depth.
Coreopsis questions
How many types of Coreopsis are there?
The Sow catalog tracks 63 distinct Coreopsis varieties. The most popular — ranked by 4.1k real gardeners — are shown first above.
What zones does Coreopsis grow in?
Across its varieties, Coreopsis covers USDA Zones 4–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Coreopsis bloom?
Most Coreopsis varieties bloom in summer to fall, early summer, mid-summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Coreopsis should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.