Threadleaf Coreopsis, Tickseed
Coreopsis verticillata

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: verticillata (ver-ti-si-LAH-tuh) (Info)
View this plant in a garden

Category:

Perennials

Height:

18-24 in. (45-60 cm)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Danger:

N/A

Bloom Color:

Bright Yellow

Bloom Time:

Late Spring/Early Summer

Mid Summer

Foliage:

Herbaceous

Other details:

May be a noxious weed or invasive

This plant is attractive to bees, butterflies and/or birds

Drought-tolerant; suitable for xeriscaping

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Keystone Heights, Florida

Satellite Beach, Florida

Cordele, Georgia

Boise, Idaho

Washington, Illinois

Jeffersonville, Indiana

Florence, Mississippi

Kansas City, Missouri

Fuquay Varina, North Carolina

Winston Salem, North Carolina

Belfield, North Dakota

Tulsa, Oklahoma

Birdsboro, Pennsylvania

Sioux Falls, South Dakota

Abilene, Texas

Arlington, Texas

Fort Worth, Texas

Milwaukee, Wisconsin

show all

Gardeners' Notes:

3
positives
4
neutrals
0
negatives
RatingContent
Neutral

On Feb 27, 2012, Gabrielle from (Zone 5a) wrote:

Can spread fairly quickly and somewhat prone to powdery mildew. Blooms June - September in my garden. Crop back for fresh growth when shabby looking.

Positive

On Sep 2, 2008, LaFleurBonne from Satellite Beach, FL wrote:

So far I only have this one volunteer plant which I hope will reproduce. It has bloomed continuously from early Spring and is still going strong though we are now into September. It produces loads of flowers despite poor sandy soil, extreme heat and dry periods, and it also has survived the torrential rains of Fay. This free-flowering no-work airy plant with almost no leaves looks great in the border.

Positive

On Jun 7, 2008, rebecca30 from Cary, NC (Zone 7b) wrote:

I have mine planted next to Verbena 'Purple Homestead', nice color combo. Mine are planted under the partial shade of a mimosa tree. Does well still.

Neutral

On Mar 21, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Medium 24" - Plant 14" apart. Golden yellow with green wispy foliage. Continuously in bloom from early summer right into fall. Makes a good cut flower and has narrow tapered foliage. They spread readily and can be used in a naturalized planting, on a sunny bank, or in the traditional border. While they attract butterflies, they are deer resistant.

Positive

On Oct 15, 2006, Lady_fern from Jeffersonville, IN (Zone 6a) wrote:

Easy from seed and long-blooming. I strongly prefer these over black-eyed susans.

Neutral

On Apr 27, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

Tough, drought-tolerant plant. Can become invasive if not deadheaded.

Neutral

On Nov 8, 2000, gardener_mick from Wentworth, SD (Zone 4a) wrote:

These are a perennial in zones 4-9. They need full sun and well drained soil that is fertile and somewhat moist. They produce yellow flowers on top of 1 1/2-2' stems. The foliage is a deep green. They bloom late spring to late summer.

These are a great addition to cut flower arrangements.