Coreopsis, Tickseed 'Jethro Tull'

Coreopsis

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Coreopsis (kor-ee-OP-sis)
Synonym
Spacing
12-18 in. (30-45 cm)
Sun Exposure
12-15 in. (30-38 cm)
Danger
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)
Hardiness
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Color
Bloom Time
Other Details
Seed Collecting
Full Sun
Sun to Partial Shade
Fruit Shape
N/A
Fruit Size
Gold (yellow-orange)
Bright Yellow
Fruit Colors
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Growing Habit
Herbaceous
Smooth
Days to Maturity
Seed Type
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Disease Resistance
Collect seedhead/pod when flowers fade; allow to dry
Properly cleaned, seed can be successfully stored
Leaf Type
Foliage Color
Bloom Characteristics
Water Requirements
Perennials
Where to Grow
Other details
Propagation Methods
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Soil pH requirements
Patent Information
Plant Size (check one)
Growing Habit
Growth Rate
Leaf Shape
Leaf Appearance
Degree to which the appearance is present
Leaf Texture (top)
Leaf Texture (bottom)
Leaf Color
Color of Leaf Margin
Leaf Substance
Number of Vein Pairs
Appearance of Margin
Margin Width
Flower Shape
Flower Fragrance
Does it set seed?
Flower Size
Flower Type
Blooming Habit
Foliage Habit
Color Patterns
Awards (if applicable)
Seed Type
Growth Habit
Days to Maturity
Awards (if applicable)
Patented
Bloom Shape
Other Details
Pruning Instructions
Kernel Color
Flower Shape
Flower Habit
Bloom Size
Color Pattern
Bloom Shape
Pruning Groups
Bloom Diameter
Heat (Pungency)
Fruit Shape
Fruit Size
Fruit Color
Disease Resistance
Seed Type
Flower Size
Size/Type
Flower Characteristics
Leaf Shape/Type
Leaf Texture
Leaf Color
Propagation
Pollination
Bearing Habit
Rootstock Vigor
Disease Resistance
Fruit Usage
Classification
Regional

This plant is said to grow outdoors in the following regions:

Alamo, California

Boulder Creek, California(2 reports)

Ventura, California

Colorado Springs, Colorado

Norwalk, Connecticut

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, Pest

Saint George, South Carolina

Sumter, South Carolina

Knoxville, Tennessee

Houston, Texas

Leander, Texas

Paris, Texas

Charlottesville, Virginia

Staunton, Virginia

Freeland, Washington

Kalama, Washington

Lake Stevens, Washington

Stanwood, Washington

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Featured Videos

Gardener's Notes:

5
positives
6
neutrals
1
negative
Sort By:
Sort By:
C
Charlottesville, VA | November 2022 | neutral

This has been perennial for me in 3 winters and self-seeded a little bit, though the seedlings don't look like the parent. Clean foliage ...Read More

Y
Y
Leander, TX (Zone 8a) | April 2019 | positive

Leander, TX - Central TX - growing in a pot - left the pot outdoors and plants stayed evergreen the winter of 2018/2019.

P...Read More

G
Norwalk, CT | June 2017 | neutral

Zone 7A and I have three Jethro Tull in my border. I like the flowers and I get a lot of blooms but the plants always flop. They grow abo...Read More

J
Virginia Beach, VA | June 2012 | neutral

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...Read More

M
M
Benton, KY (Zone 7a) | May 2012 | positive

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 d...Read More

G
Saint George, SC (Zone 8a) | January 2011 | positive

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 liv...Read More

M
Hopkins, MN (Zone 4a) | May 2010 | negative

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

K
K
Rockford, IL | August 2009 | neutral

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

B
Port Orange, FL | June 2008 | positive

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 su...Read More

D
west Houston, TX (Zone 9a) | April 2008 | positive

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

G
(Zone 5a) | September 2007 | neutral

This is a patented plant.

B
Lakemont, GA (Zone 8a) | March 2007 | neutral

'Jethro' is the result of a natural cross of 'Zamfir' and 'Early Sunrise'. This bright Golden yellow coreopsis grows to 15-18 in. tall....Read More

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