Large-flowered tickseed vs Threadleaf coreopsis

Large-flowered tickseed and Threadleaf coreopsis are often considered for the same spot in the garden (flowers, pollinator friendly, container). The data below shows where they differ: size, hardiness, care, toxicity and price.

Large-flowered tickseed

Coreopsis grandiflora 60 cm × 45 cm after 10 years

A bushy perennial that produces large, golden yellow daisy flowers from early summer into autumn and is good for cutting too. It is happiest in a…

Perennial

Full sun

Part shade

from about CZK 110

Threadleaf coreopsis

Coreopsis verticillata 60 cm × 60 cm after 10 years

An airy perennial with fine, thread-like foliage, covered in starry yellow flowers from early summer into autumn. It is undemanding and long-lived…

Perennial

Full sun

Part shade

from about CZK 69

Key differences

Threadleaf coreopsis spreads wider: 60 cm × 60 cm after ten years, against 60 cm × 45 cm for Large-flowered tickseed.
Large-flowered tickseed tolerates drought better than Threadleaf coreopsis.
Large-flowered tickseed needs less water than Threadleaf coreopsis.
Threadleaf coreopsis needs less care than Large-flowered tickseed.

Which one to choose?

Large-flowered tickseed is the better choice if you cannot water regularly.

Threadleaf coreopsis is the better choice if you have little time for care.

Watch out for

Large-flowered tickseed

A short-lived perennial: plants usually exhaust themselves and vanish after two or three years, so divide them every two to three years or leave some seed to renew the planting. The crown rots in wet, poorly drained soil, especially in winter. The foliage can get powdery mildew, leaf spot and rust, and slugs graze young shoots. In rich soil or with too little sun it grows lanky and flops. Without deadheading it can self-seed heavily.

Threadleaf coreopsis

Slugs and snails can graze the new shoots in spring. The crown may rot in wet, poorly drained soil, and the stems sprawl in rich soil.

The data side by side

Feature	Large-flowered tickseed	Threadleaf coreopsis
Group	Perennial	Perennial
Size after 10 years	60 cm × 45 cm	60 cm × 60 cm
Ultimate size	30–90 cm × 30–45 cm	30–90 cm × 45–60 cm
Growth rate	Medium (uncertain)	Fast (uncertain)
Light	Full sun, Part shade	Full sun, Part shade
Soil	Sandy, Average garden soil	Average garden soil, Sandy
Hardiness	down to -34 °C (USDA 4, RHS H7)	down to -40 °C (USDA 3, RHS H7)
Heat tolerance	High	High
Foliage	Deciduous	Deciduous
Flowering	June–September, yellow	June–September, yellow
Water need	Low	Medium
Drought tolerance	High	Medium
Maintenance	Medium	Low
Planting distance	40 cm	40 cm
For dogs	Non-toxic	Non-toxic
For cats	Non-toxic	Non-toxic
Typical price	approx. CZK 110	approx. CZK 89

Prices are rounded, indicative values. Toxicity data is for information only. If your pet or child has eaten a plant, contact a vet or a doctor. Data updated: October 17, 2026

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