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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 Information : The 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 1-gal. containers with more plants per rack and lower input costs.

'Sunstruck'

Protection Information : EU 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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