Coreopsis Super Star

General Information

This beautiful Coreopsis hybrid boasts extra-large flowers to bring beauty to the perennial garden.

Grower Information

Largest flowers – 2.5 to 3 in. (6 to 8 cm) – of any Coreopsis on the market. Similar habit and garden performance to UpTick™. Mildew resistant.

'Super Star'

Protection Information: PP30,805; UK PBR30642

(Flowering Only License)

Breeder: Darwin Perennials

Product Form

Liner

URC

Growing Information

Propagation

Media EC/pH: EC 0.75-0.80 mmhos/pH 5.8-6.2

Soil Temperature: 70-72°F (21-22°C)

Rooting Hormone: 500-1,000 ppm IBA

Mist: Moderate

Fertilization: 50-75 ppm N

Pinching: Pinch once in the liner stage.

Transplanting: 35-42 days after sticking

Comments: Use low mist settings; do not oversaturate rooting media. Root zone temperatures of 70°F (21°C). Remove flowers in propagation.

Finishing

Media pH: 5.8-6.2

Temperature: Nights: 55 to 65°F (13 to 17°C) Days: 60 to 80°F (15 to 27°C)

Light Level (fc): 5,000 to 8,000

Vernalization: No

Daylength: Day length neutral

Watering: Allow media to dry moderately between watering.

Fertilization: Use a balanced fertilizer at a rate of 125 to 150 ppm.

Pinch After Transplant: Yes

Plant Growth Regulators: Daminozide/chlormequat chloride combination at 3,750-5,000 ppm, daminozide/chlormequat chloride500 ppm before flowering. Uniconazole-P spray can be used after flowering if needed.

Pests and Fungal Diseases: Spider mites, thrips

Crop Scheduling

1–qt. (10–cm) pot, 1 plant per pot: Not recommended

1–gal. (15–cm) pot, 1 plant per pot: Rooted: 10-12 wks

2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot: Rooted: 12-14 wks

Bloom Months: March to November

Garden Details

Scientific name: Coreopsis hybrida

Common Name: Tickseed

Hardiness Zone: 5a - 9a

Hardiness Degree: -25°F (-31.7°C)

Blooming Season: Early Spring, Spring, Late Spring, Summer, Late Summer, Autumn, Winter

Plant Habit: Mounded

Characteristics: Attracts Bees, Attracts Butterflies, Deer Resistant, Frost Tolerant, Heat Tolerant, Low Maintenance

Water: Medium

Fertilize: Once a month

Spacing: 16 - 18 in. (41 - 46 cm)

Height: 14 - 16 in. (36 - 41 cm)

Width: 16 - 18 in. (41 - 46 cm)

Exposure: Sun

Videos

Production of Coreopsis Double the Sun

2:21

Early Spring Perennials from Kieft Seed

2:49

Growing on to Finish Coreopsis Double the Sun

1:15

Early Spring Perennials: The Choice is Easy!

2:29

Bench Card

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