Coreopsis tinctoria

Coreopsis tinctoria

Plains Coreopsis, Calliopsis, Golden Tickseed

Family: Asteraceae (ass-ter-AY-see-ee)
Genus: Coreopsis (kor-ee-OP-sis)
Species: tinctoria (tink-TOR-ee-uh)

Synonym:Coreopsis tinctoria var. immminuta
Synonym:Coreopsis cardaminefolia
Synonym:Coreopsis stenophylla


Lanceleaf Coreopsis, Tickseed Coreopsis
Coreopsis lanceolata


Synonym:Coreopsis crassifolia
Synonym:Coreopsis heterogyna
Synonym:Coreopsis lanceolata var. villosa






Coreopsis tinctoria (Asteraceae)

A hardy, upright annual, native to the southern United States, it has spread throughout much of North America. Leaves are finely divided occurring mostly in the lower portion of the plant. A prodigious bloomer, having vibrant yellow flowers with maroon centers. Prefers full sun in various soil types. An ideal plant for areas that have poor drainage or remain soggy for an extended period of time.

Average planting success with this species: 80%
Height: 1-3 feet
Germination: 15-30 days
Optimum soil temperature for germination: 60F-65F
Sowing depth: 1/16"
Blooming period: May-August
Average seeds per pound: 1,400,000
Seeds/Pkt: 925
Seeding rate: 2 lbs. per acre
1 oz Covers: 1,361 sq. ft.
Suggested use: Ditches, low lying areas, mixes.
Miscellaneous: Often forms large colonies in ditches along roadsides.




Category:
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
15-18 in. (38-45 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)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Herbaceous

Other details:
Requires consistently moist soil; do not let dry out between waterings

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
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored