Photo by Melody

PlantFiles: Coreopsis, Tickseed
Coreopsis 'Jethro Tull'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Cultivar: Jethro Tull
Additional cultivar information: (PP18789)
Hybridized by Saul, Itsaul Plants; Year of Registration or Introduction: 2008

6 vendors have this plant for sale.

26 members have or want this plant for trade.


18-24 in. (45-60 cm)

18-24 in. (45-60 cm)

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


Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Properly cleaned, seed can be successfully stored

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to view:

By efbiosis
Thumbnail #1 of Coreopsis  by efbiosis

By dmj1218
Thumbnail #2 of Coreopsis  by dmj1218

By dmj1218
Thumbnail #3 of Coreopsis  by dmj1218

By Gabrielle
Thumbnail #4 of Coreopsis  by Gabrielle

By Rillalev
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By ladygardener1
Thumbnail #6 of Coreopsis  by ladygardener1

By bonehead
Thumbnail #7 of Coreopsis  by bonehead

There are a total of 17 photos.
Click here to view them all!


4 positives
4 neutrals
1 negative

Gardeners' Notes:

Neutral joys_garden On Jun 10, 2012, joys_garden from Virginia Beach, VA wrote:

My Jethro Tull has developed a serious case of fungus. All my other perennials are looking good. I have 4 other types of coreopsis in the same bed and all are thriving. Ive treated mine w fungicide and hope it will recover.
I was at Lowes today and I noticed that their Jethro Tull variety is also plagued with the same fungus!
Anyone else have this problem?

Positive melody On May 4, 2012, melody from Benton, KY (Zone 7a) wrote:

Super reliable in west KY. 'Jethro' forms an attractive mound of golden yellow flowers and blooms from April till fall as long as it is deadheaded.No pests and loves the sun. Great plant!

Positive goodwin315 On Jan 31, 2011, goodwin315 from Saint George, SC (Zone 8a) wrote:

This plant comes back every year for me.Sometimes popping up in places I didn't plant it(reseeding and my yard and neighbors yards).I live in zone 8.I purchased my plants from Santa Rosa Gardens.

Negative ms_greenjeans On May 30, 2010, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

This coreopsis has lovely large flowers and a long bloom time. However, in zone 4a, only 2 out of 8 survived one winter.

Neutral Kathy5 On Aug 19, 2009, Kathy5 from Rockford, IL wrote:

I had three jethro tulls, last year. They did beautiful, but they did not survive the winter.

Positive bahakiwi On Jun 21, 2008, bahakiwi from Port Orange, FL wrote:

This is one of the hardiest plants in my butterfly garden. We have had 2 straight weeks of rain and this has been one of the very few survivors. It blooms profusely in full sun without any signs of stress. Very low maintenance plant.

Positive dmj1218 On Apr 22, 2008, dmj1218 from west Houston, TX (Zone 9a) wrote:

Pretty robust and flowers well, even down here. Blooms a little later than most of the Coreopsis species.

Neutral Gabrielle On Sep 7, 2007, Gabrielle from (Zone 5a) wrote:

This is a patented plant.

Neutral berrygirl On Mar 24, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

'Jethro' is the result of a natural cross of 'Zamfir' and 'Early Sunrise'. This bright Golden yellow coreopsis grows to 15-18 in. tall. Butterflies love it but deer don't.


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

Boulder Creek, California
Ventura, California
Colorado Springs, Colorado
Daytona Beach, Florida
Cordele, Georgia
Lawrenceville, Georgia
Atalissa, Iowa
Marrero, Louisiana
Pollock, Louisiana
Baltimore, Maryland
Sandwich, Massachusetts
Commerce Township, Michigan
Dearborn Heights, Michigan
Garden City, Michigan
Florence, Mississippi
Madison, Mississippi
Haddonfield, New Jersey
Albuquerque, New Mexico
Elephant Butte, New Mexico
Charlotte, North Carolina
Creston, North Carolina
Oklahoma City, Oklahoma
Albion, Pennsylvania
Gödöllő, Prince Edward Island
Saint George, South Carolina
Sumter, South Carolina
Knoxville, Tennessee
Houston, Texas
Paris, Texas
Staunton, Virginia
Freeland, Washington
Kalama, Washington
Lake Stevens, Washington
Stanwood, Washington

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