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Penstemon Cherry Sparks

Scientific Name : Penstemon hybrida
Common Name : Beard Tongue
Hardiness Zone : 5a - 9b
Hardiness Degree : -20°F (-29°C)
Blooming Season : Spring, Late Spring, Summer, Late Summer
Plant Habit : Upright
Characteristics : Heat Tolerant
Water : Light
Fertilizer : Once a month
Spacing : 16 - 18" (41 - 46cm)
Height : 18 - 20" (46 - 51cm)
Width : 14 - 16" (36 - 41cm)
Exposure : Sun
General Information : Penstemon perform best in sunny locations with well-drained soils.
Fertilize once per month for best results.
Removing spent flower stems will encourage repeat blooming.
Idea & Tips : Penstemon perform best in sunny locations with well-drained soils.
Fertilize once per month for best results.
Removing spent flower stems will encourage repeat blooming.
Grower InformationDouble the flowering time for longer shipping and selling window, plus more color in the garden.
  • Bigger blooms with bright, cherry-red color.
  • More heat-tolerant and Winter-hardy than other varieties.
  • Sterile, long-flowering variety, without the unsightly seed heads.
'Cherry Sparks'
Protection InformationPP28,869
(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:
      500 ppm IBA
      Mist:
      Moderate to high for first 24 hours, then reduce to low
      Fertilization:
      50-75 ppm N
      Pinching:
      Recommended.
      Transplanting:
      35-42 days after sticking
      Comments:
      Use low mist settings; do not oversaturate rooting media. Root zone temperatures of 70°F (21°C).
  • Finishing Guide

    • Media pH:
      5.8-6.2
      Temperature:
      Nights: 55 to 70°F (13 to 21°C) Days: 60 to 80°F (15 to 27°C)
      Light Level (fc):
      3,000 to 5,000
      Vernalization:
      No
      Daylength:
      Long day facultative
      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:
      PGRs generally not needed
      Pests and Fungal Diseases:
      White fly, Spider mites
  • 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:
      May to August

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Marketing Information
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