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Threadleaf Coreopsis, Tickseed 'Moonbeam'

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)
Cultivar: Moonbeam
View this plant in a garden



Water Requirements:

Unknown - Tell us

Sun Exposure:

Full Sun

Sun to Partial Shade



Foliage Color:

Unknown - Tell us


18-24 in. (45-60 cm)


15-18 in. (38-45 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)

Where to Grow:

Unknown - Tell us



Bloom Color:

Pale Yellow

Bright Yellow

Bloom Characteristics:

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

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Blooms repeatedly

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


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

Birmingham, Alabama

Phoenix, Arizona

Gravette, Arkansas

Dublin, California

Eureka, California

Martinez, California

Colorado Springs, Colorado(2 reports)

Denver, Colorado(2 reports)

Parker, Colorado

East Canaan, Connecticut

Torrington, Connecticut

Woodstock, Georgia

Bloomington, Illinois

Hampton, Illinois

Lake In The Hills, Illinois

Mount Prospect, Illinois

Peoria, Illinois

Rockford, Illinois

Urbana, Illinois

Waukegan, Illinois

Coatesville, Indiana

Indianapolis, Indiana

Jeffersonville, Indiana

Des Moines, Iowa

Olathe, Kansas

Barbourville, Kentucky

Hebron, Kentucky

La Grange, Kentucky

Salvisa, Kentucky

Springfield, Kentucky

Bar Harbor, Maine

Corinna, Maine

Baltimore, Maryland

Easton, Maryland

La Plata, Maryland

Laurel, Maryland

Arlington, Massachusetts

Milton, Massachusetts

Revere, Massachusetts

Roslindale, Massachusetts

Dearborn Heights, Michigan

Detroit, Michigan

Niles, Michigan

Owosso, Michigan

Plainwell, Michigan

Rosemount, Minnesota

Saint Cloud, Minnesota

Saint Paul, Minnesota

Florence, Mississippi

Florissant, Missouri

Independence, Missouri

Lincoln, Nebraska

Reno, Nevada

Red Bank, New Jersey

Albuquerque, New Mexico

Alden, New York

Buffalo, New York

Hilton, New York

Himrod, New York

Ithaca, New York

Kew Gardens, New York

Kinderhook, New York

Lake Placid, New York

Mahopac, New York

Port Washington, New York

Westfield, New York

Fuquay Varina, North Carolina

Raleigh, North Carolina

Bucyrus, Ohio

Cambridge, Ohio

Cincinnati, Ohio

Cleveland, Ohio

Hamilton, Ohio

Salem, Ohio

Baker City, Oregon

Beaverton, Oregon

Bend, Oregon(2 reports)

Portland, Oregon

Brookhaven, Pennsylvania

Johnsonburg, Pennsylvania

Milford, Pennsylvania

Pittsburgh, Pennsylvania

Troy, Pennsylvania

Verona, Pennsylvania

West Chester, Pennsylvania

Wilkes Barre, Pennsylvania

Rock Hill, South Carolina

Aberdeen, South Dakota

Hendersonville, Tennessee

Knoxville, Tennessee

Nashville, Tennessee

Brazoria, Texas

Fort Worth, Texas

Hurst, Texas

Palestine, Texas

Rowlett, Texas

San Antonio, Texas

Falls Church, Virginia

Leesburg, Virginia

Linden, Virginia

Manassas, Virginia

Norfolk, Virginia

Springfield, Virginia

Virginia Beach, Virginia

Anacortes, Washington

Port Townsend, Washington(2 reports)

Vancouver, Washington(2 reports)

Appleton, Wisconsin

Ellsworth, Wisconsin

Milwaukee, Wisconsin

show all

Gardeners' Notes:


On Apr 4, 2014, coriaceous from ROSLINDALE, MA wrote:

A beautiful plant, with fine-textured foliage and lemon yellow flowers all summer. Like the species, it requires good drainage---better in sandy or loamy soils than clay.

This cultivar differs from the species in the lighter, softer color of the flowers. It is also sterile, which is why it continues to bloom for so long without deadheading. I do find that some light cutting back in August if blooming slacks off can help it rebloom more strongly in September.

'Moonbeam' tends to be short-lived unless you divide it every couple of years. Unlike the other cultivars, which can be aggressive in the garden, 'Moonbeam' tends to fade away where a neighboring perennial spreads into it. I suspect that those gardeners who find 'Moonbeam' to be aggressive have mislabeled ... read more


On Apr 8, 2013, nataliesager from North Laurel, MD wrote:

I love this plant - but it very rarely comes back the following summer in my garden. It did the first few years, but then stopped. And since then - I keep buying new plants every summer and starting over. I am in zone 7 - Baltimore-Washington corridor. What am I doing wrong?


On Oct 20, 2010, annakins from Aberdeen, SD wrote:

This is the 3rd time I've tried growing this plant. Each year it has not come back. This year it came back and had a 3 foot spread. Bloomed all summer long. Very striking with Max Frei geranium or blue belladonna delphinium.


On Jul 7, 2010, kczsweetie from central, IL (Zone 5a) wrote:

What a great perennial! Mine has really fluorished in it's second year. Low maintenance, and flowers non-stop. Mine are in full/part sun. Hasn't spread at all for me, which is what I wanted, and retains it's delicate-looking globe form all summer. I just love the pale lemon color and dainty leaves.
Quickly becoming one of my absolute favorite plants.


On Jul 8, 2009, littlelamb from Virginia Beach, VA (Zone 8b) wrote:

This is a wonderful plant to have in any garden. It's tough, drought-tolerant, can handle humidity pretty well and can handle alot of sun. At dusk, the flowers seem to glow due to their pale yellow color. I moved one of my plants this year, and still have a wonderful flush of flowers. It's pretty low care so it's a plant to have if you really don't like to spend alot of time in the garden on those hot and humid days.


On Nov 5, 2005, carrielamont from Milton, MA (Zone 6a) wrote:

This plant spreads almost infinitely. We have to cut it back every year because it's only allotted a small spot! But it's another Old Faithful - a reliable prolific bloomer. If you like yellow, go for it - in fact, I'll send you some.

July 2010 OK, our entire yard is accented in yellow now, and I am hating the color. It spread not only by a massive underground root system but by seed. Those ominous ferny fronds, and the obnoxious "cheery" yellow flowers .... grrrr. Let's just say it has escaped cultivation.


On Aug 10, 2005, ADKSpirit from Lake Placid, NY (Zone 4a) wrote:

This is a tough little plant. I didn't get all my plants in the ground last year, because I didn't have all my flower beds done. Those that didn't go in the ground spent the winter in plastic greenhouse pots, above ground, as protected as could be. Due to some funky weather we had, not all of them made it, but this little guy made it through a very a-typical Adirondack mountain winter.


On Jun 3, 2005, Gindee77 from Hampton, IL (Zone 5a) wrote:

This is a sweet little plant that comes back better and better each year.


On Oct 23, 2004, SalmonMe from Springboro, OH (Zone 6a) wrote:

What a sweet little plant! Plant it in groups of 3 or more for best effect. Mulch plants in zone 5 to keep protected from winter kill.


On Jun 8, 2004, Gayle0000 from Bloomington, IL wrote:

Zone 5b/Central IL: Excellent perennial! Mine grow profusely in full sun, clay soil. I don't water mine due to the clay soil retaining more moisture. No need for fertilizer or soil ammendments for me. Blooms open around June 1 here, and doesn't stop until September. I sheared some & deadheaded some for 1 season. With shearing, I lost my blooms for a couple weeks. Deadheading didn't make a change. I just leave mine alone, and have heavy blooms all season. Leave foliage on for winter and cut back dead foliage in the spring.

I notice the new growth is more heavy on the north, or most shaded base of the clumps, so I make sure my division placements are such that they will spread to the direction toward the shade. This phenomena happens in all 7 of my clumps. Not invasive. I've d... read more


On Jun 1, 2004, tamm0449 from Medway, OH (Zone 5a) wrote:

I enjoyed reading the synopsis on the Moonbeam plant. I bought the seeds for this plant from Martha Stewart. I must have watered the seeds too much and only one seed sprouted so much to my impatience I can not wait to see this plant grow and show it's true beauty in full bloom. How long must I wait for it to bloom? Does it bloom the first year or must I wait another year, also how wide and tall does this plant grow? Thank you for so much information on one of my favorite plants and all of the friendly people who are so willing to inform others of their love and knowledge of the plant kingdom.


On May 31, 2004, uofagirl from Orrville, OH (Zone 6a) wrote:

In zone 5.5/6 this is not a perenial, but more a tender perennial. Does not do as well the second year as the first. Requires constant deadheading. Otherwise, very pretty delicate yellow blooms and fine foliage.


On Aug 7, 2003, Ladyfern from Jeffersonville, IN (Zone 6a) wrote:

Low-maintenance, drought-tolerant, long-blooming, excellent shape, lovely flowers--what more could you ask for? I give starts of mine to anyone who needs a plant!


On Jul 18, 2003, lmsmith4 from Niles, MI wrote:

Zone 5 - Beautiful foilage; long, profuse blooming time; bright yellow flowers; easily divided; becomes huge if unattended!


On Jun 1, 2003, lauburt from Vancouver, WA wrote:

Excellent plant! Manageable for most landscapes. Butterflies love it! Nice, feathery foliage and gorgeous greenish-yellow flowers. (Reminds me of a yellow highlighter pen!)Flowers continuously from June to frost.