Coreopsis, Threadleaf Coreopsis, Tickseed 'Route 66'

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: Route 66
Additional cultivar information:(PP20609; Cruizin series, aka Cruizin Route 66)
Hybridized by Bauer
Registered or introduced: 2009



Foliage Color:


Bloom Characteristics:

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

Flowers are fragrant

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round

Suitable for growing in containers


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


18-24 in. (45-60 cm)

24-36 in. (60-90 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

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Pale Yellow

Bright Yellow

Maroon (Purple-Brown)

Bloom Time:

Mid Summer

Late Summer/Early Fall



This plant is resistant to deer


Other details:

Unknown - Tell us

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:


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:

Desert View Highlands, California

Jacksonville, Florida

Barbourville, Kentucky

Harwich, Massachusetts

Nashville, Michigan

Owosso, Michigan

Rutherford, New Jersey

Raleigh, North Carolina

Fremont, Ohio

Wilkes Barre, Pennsylvania

Wynnewood, Pennsylvania

Urbanna, Virginia

show all

Gardeners' Notes:


On Sep 11, 2014, tepelus from Nashville, MI (Zone 6a) wrote:

I bought three of these plants in August last summer in 3 inch pots and they weren't much to look at then, but they grew and flowered until the hard frosts came. This year they increased in size dramatically (growing in full sun and sandy loam soil) and continued to increase throughout the summer. They have been blooming non-stop from June until now (mid-September) and I'm sure they'll keep on blooming until frost. I have not had to deadhead them. They don't flop, but I haven't given them any fertilizer (which can make plants like coreopsis that like lean soil do) and we've had good rainfall all summer, so I've never had to give them any extra water but a couple of times, and that was only because I had added new plants to the bed they were in and watered the entire bed. I have not had any... read more


On May 26, 2014, renee611 from palmdale, CA (Zone 8b) wrote:

I have several of these plants, and they perform very well in my dry garden. They are covered in blooms from late spring to early fall. They make good edgers for a bed of cacti!


On Aug 2, 2011, ryguy319 from Owosso, MI (Zone 5b) wrote:

I bought this plant on a whim when I was with a friend plant shopping at a big plant greenhouse in Lansing, MI. It was just oh maybe I'll try this one it looks kind of good and I like Coreopsis but I wasn't expecting it to be the performer that it has become. In July it was in full bloom the first year I put it in and now beginning of August after about 50 blooms later all spent it is slowly starting to bloom again. I've cut off all of the spent blooms basically so I can share the seeds but also hoping it will encourage reblooming which it is starting to do some what so far.
I don't know if this is just the plants characteristics because when I did plant it I did give it a good dose of time released fertilizer.
But all in all this is a plant worth having just gorgeous i... read more