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  • Coreopsis Sunny Day Bloom
  • Coreopsis Sunny Day Commercial Landscape 1
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  • Coreopsis Sunny Day Landscape

Coreopsis Sunny Day

Scientific Name : Coreopsis grandiflora
Common Name : Tickseed
Hardiness Zone : 4a - 9b
Hardiness Degree : -30°F (-34°C)
Blooming Season : Summer, Autumn, Late Summer
Plant Habit : Upright
Characteristics : Attracts Bees, Attracts Butterflies, Deer Resistant, Drought Tolerant, Attracts Hummingbirds, Heat Tolerant
Water : Light
Fertilizer : Once a month
Spacing : 12 - 18" (30 - 46cm)
Height : 18 - 24" (46 - 61cm)
Width : 22 - 24" (56 - 61cm)
Exposure : Sun
General Information : Sunny day has lots of large, single yellow blooms on compact plants.
Idea & Tips : Plant in full sun in a well-drained location.
Grower InformationExcellent choice to brighten borders and containers.
  • Lots of big, bright, single yellow blooms on compact plants.
  • Remove spent flowers to encourage reblooming.
  • North American native species.
Daylength : Coreopsis Sunny Day will bloom naturally as days lengthen and temperatures begin to rise in late Spring.
Cool Treatment
Plant Maturity: Cold treatment beneficial, but not required for flowering. Plants should be bulked under natural short days for a 4-8 week period. Mature, bulked up plants will respond more favorably to cold treatment.
Temperature: 35-41°F
Duration: 6-15 weeks
Benefits: Increased number of flowers; earlier flowering.
Plant Growth Regulators : Generally not needed.
Protection InformationPP17,405
(Flowering Only License)
Breeder : Darwin Perennials
  • Propagation Guide
    • Media EC/pH:
      EC 0.75-0.80 mmhos/pH 5.8-6.2
      Soil Temperature:
      70-72°F (21-22°C)
      Rooting Hormone:
      1,000 ppm IBA
      50-75 ppm N
      Pinch once in the liner stage.
      28-35 days after sticking
      Begin fertilizing 7 days after stick. Avoid over-misting.
    • Media pH:
      Nights: 55 to 60°F (13 to 16°C) Days: 60 to 65°F (16 to 18°C)
      Light Level (fc):
      5,000 to 8,000
      Long day obligate
      Allow media to dry evenly between watering.
      Maintain constant fertilization at 150 to 200 ppm N.
      Pinch After Transplant:
      Plant Growth Regulators:
      B-Nine 1,500 ppm/Cycocel 800 ppm tank mix for height control
      Pests and Fungal Diseases:
      Keep good air movement to control powdery mildew.
    • 1–qt. (10–cm) pot, 1 plant per pot:
      Not recommended
      1–gal. (15–cm) pot, 1 plant per pot:
      Unrooted: 15-17 wks Rooted: 10-12 wks
      2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot:
      Unrooted: 19-22 wks Rooted: 12-14 wks
      Bloom Months:
      June to September

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