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Heliopsis helianthoides Double Sunstruck

Scientific Name : Heliopsis helianthoides
Common Name : Ox-eye
Hardiness Zone : 4a - 9b
Hardiness Degree : -30°F (-34°C)
Blooming Season : Late Spring, Summer
Plant Habit : Mounded
Water : Medium
Fertilizer : Once a month
Spacing : 12 - 14" (30 - 36cm)
Height : 14 - 16" (36 - 41cm)
Width : 12 - 14" (30 - 36cm)
Exposure : Sun
General Information : Excellent season-long flowering will give more color in the garden.
Idea & Tips : Prefers sunny locations and well-drained soils.
Grower Information
  • Semi-double flowers on free-branching plants make a striking season extender.
  • Compact habit lets growers ship more plants per rack.
  • Intense yellow flowers and variegated foliage command attention.
  • Long-flowering plants light up Spring and Summer gardens.
'Double Sunstruck'
Protection InformationPP26,608
(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
      Mist:
      Low
      Fertilization:
      50-75 ppm N when roots become visible
      Pinching:
      Recommended after roots are established. Leave 4-5 active internodes.
      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. Long day obligate plant. Must provide long days in propagation.
  • Finishing Guide

    • Media pH:
      5.8-6.2
      Temperature:
      Nights: 55 to 65°F (13 to 18°C) Days: 65 to 75°F (18 to 24°C)
      Light Level (fc):
      5,000 to 8,000
      Vernalization:
      Beneficial; aids in bulking.
      Daylength:
      Long day obligate
      Watering:
      Allow media to dry slightly between watering.
      Fertilization:
      Use a balanced fertilizer at a rate of 150 to 175 ppm.
      Pinch After Transplant:
      Recommended
      Plant Growth Regulators:
      PGRs generally not needed
      Pests and Fungal Diseases:
      Pythium and Rhizoctonia can result from overwatering. Thrips, White fly, Aphids
  • Crop Scheduling

    • 1–qt. (10–cm) pot, 1 plant per pot:
      Unrooted: 14-16 wks Rooted: 8-10 wks
      1–gal. (15–cm) pot, 1 plant per pot:
      Unrooted: 16-19 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 August

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Marketing Information
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