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Heliopsis helianthoides Sunstruck

Scientific Name : Heliopsis helianthoides
Common Name : Ox-eye
Hardiness Zone : 4a - 9b
Hardiness Degree : -25°F (-32°C)
Blooming Season : Summer, Late Summer
Plant Habit : Mounded
Water : Medium
Fertilizer : Once a week
Spacing : 12 - 14" (30 - 36cm)
Height : 14 - 16" (36 - 41cm)
Width : 12 - 14" (30 - 36cm)
Exposure : Sun
General Information : Big yellow flowers add “WOW” to the landscape.
Flowers all Spring and Summer.
Idea & Tips : Plant in sunny location with well-drained soils.
Fertilize monthly.
Trim spent blooms for cleaner appearance.
Grower InformationThe biggest blooms in its class. Plus, eye-catching, variegated foliage.
  • Compact habit is easier to ship and shows better at retail.
  • Blooms 4 to 6 weeks earlier than other Heliopsis and stays in flower all Summer.
  • Produces full one-gallon containers with more plants per rack and lower input costs.
'Sunstruck'
Protection InformationEU PBR40480; PP25,524
(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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