Coreopsis, Threadleaf Coreopsis, Tickseed 'Zagreb'

Coreopsisverticillata

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Coreopsis (kor-ee-OP-sis)
Species
verticillata (ver-ti-si-LAH-tuh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
24-36 in. (60-90 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)
Danger
N/A
Bloom Color
Red-Orange
Gold (yellow-orange)
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Blooms repeatedly
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
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
Seed Collecting
Regional

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

Fayetteville, Arkansas

Fountain Valley, California

Cos Cob, Connecticut

New Haven, Connecticut

Bear, Delaware

Deland, Florida

Palm Harbor, Florida

Atlanta, Georgia

Bethlehem, Georgia

Marietta, Georgia

Carbondale, Illinois

Cherry Valley, Illinois

Nilwood, Illinois

Peoria, Illinois

Spring Grove, Illinois

Washington, Illinois

Waukegan, Illinois

Mishawaka, Indiana

Terre Haute, Indiana

Iowa City, Iowa

Shawnee Mission, Kansas

Barbourville, Kentucky

La Grange, Kentucky

Lexington, Kentucky

Salvisa, Kentucky

Kennebunk, Maine

Madison, Maine

Jamaica Plain, Massachusetts

Saugus, Massachusetts

Somerville, Massachusetts

Dearborn Heights, Michigan

Farmington, Michigan

Owosso, Michigan

Royal Oak, Michigan

Trenton, Michigan

Hopkins, Minnesota

Kasota, Minnesota

Minneapolis, Minnesota

Rosemount, Minnesota

Saint Cloud, Minnesota

Saint Paul, Minnesota(2 reports)

Belton, Missouri

Miles City, Montana

Omaha, Nebraska

Whitefield, New Hampshire

Cedar Knolls, New Jersey

Jamesburg, New Jersey

Whitehouse Station, New Jersey

Glen Head, New York

Ithaca, New York

Kew Gardens, New York

Penn Yan, New York

Southold, New York

Belfield, North Dakota

Cincinnati, Ohio

Delaware, Ohio

Newark, Ohio

Baker City, Oregon

Bend, Oregon

Chiloquin, Oregon

Ambler, Pennsylvania

Lititz, Pennsylvania

Pottstown, Pennsylvania

Wilkes Barre, Pennsylvania

Aberdeen, South Dakota

Rockwall, Texas

Rowlett, Texas

Sugar Land, Texas

Farmington, Utah

Ruther Glen, Virginia

Virginia Beach, Virginia

Kalama, Washington

Spokane, Washington

Vancouver, Washington

Columbus, Wisconsin

Minocqua, Wisconsin

West Bend, Wisconsin

show all

Featured Videos

Gardener's Notes:

11
positives
3
neutrals
1
negative
Sort By:
Sort By:
S
Lititz, PA (Zone 6b) | May 2015 | neutral

This plant is a decent spreader and has nice foliage. The bloom is decent as well and attracts many small pollinators. Ours is planted ...Read More

M
Hopkins, MN (Zone 4a) | July 2012 | positive

I have issues with coreopsis; I have planted several Moonbeam, Creme Brulee, rosea, and Jethro Tull more than once, and none of them ever...Read More

L
CEDAR KNOLLS, NJ | July 2011 | positive

Spreads quickly so be prepared to divide relatively frequently. Pretty flower with long bloom time.

A
Aberdeen, SD | October 2010 | neutral

Blooms its fool head off all summer. Didn't realize how much it spreads. I have to divide every year and put some into pots with other fl...Read More

L
Virginia Beach, VA (Zone 8b) | June 2010 | positive

I'm loving this plant. I have it planted on the South side of my house so it receives afternoon sun from 3-7 which can be pretty brutal ...Read More

G
Columbus, WI | September 2009 | positive

I love Coreopsis verticillata. I planted five in heavy clay, full sun. The first year was your typical 1st year growth. Year 2 was won...Read More

D
Fayetteville, AR | June 2008 | positive

Zagreb grows well for me in my front (northwest Arkansas) garden, facing east, where it gets 4 1/2 or so hours of morning sun. This is th...Read More

S
S
Somerville, MA (Zone 6b) | May 2008 | positive

I have grown 'Zagreb' in more favorable conditions, but I am currently growing it in a sloped, hot, windy, poor-soil site and it's still ...Read More

C
Batavia, OH (Zone 6a) | February 2008 | negative

Planted (3) in late Spring/early summer 2007; plants did fine but not one flower. They get hot sun all day, and are planted in holes in a...Read More

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

Short to Medium 18"- Plant 14" apart. Golden yellow flowers on a more upright plant. Especially free flowering - continuously in bloom fr...Read More

K
K
Sugar Land, TX (Zone 9a) | June 2006 | positive

I'm very happy with coreopsis. I have dried the flower heads and am collecting seeds. Will post the progress if they mature into plants.

R
Belton, MO | July 2005 | positive

I planted two of these plants then completely ignored them for a year. Despite that one of them made it through to the next year wonderf...Read More

K
Mission, KS (Zone 6a) | April 2005 | positive

I love this plant! I would have it in my garden because of the beautiful, airy foliage even without the flowers it produces. I have two...Read More

J
J
Belfield, ND (Zone 4a) | October 2004 | positive

This beautiful plant has never failed me. Comes back year after year like an old and faithful friend. I love it!

L
Vancouver, WA | June 2003 | positive

Blooms continuously from June until frost. Nice, bright yellow color. I especially enjoy the feathery foliage!

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