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  • Penstemon barbatus Rock Candy<sup>®</sup> Light Pink Bloom
  • Penstemon barbatus Rock Candy<sup>®</sup> Light Pink Container
Other Rock Candy Varieties

Penstemon barbatus Rock Candy® Light Pink

Scientific Name : Penstemon barbatus
Common Name : Beard Tongue
Hardiness Zone : 5a - 8b
Hardiness Degree : -20°F (-29°C)
Blooming Season : Spring, Late Spring, Summer, Autumn, Late Summer
Plant Habit : Upright
Characteristics : Attracts Bees, Attracts Butterflies, Drought Tolerant, Attracts Hummingbirds, Heat Tolerant
Water : Light
Fertilizer : Once a month
Spacing : 6 - 12" (15 - 30cm)
Height : 12" (30cm)
Width : 12" (30cm)
Exposure : Sun
General Information : Bell-shaped blooms on compact flower spikes.
Idea & Tips : Prefers well-drained soil in full sun, although will tolerate a wide range of soils and conditions.
Grower InformationCompact varieties bloom in bold colors…“sweet as candy, tough as nails!”
  • Bell-shaped blooms on compact flower spikes.
  • Plump panicles stand out against green foliage.
  • Fits well at the front of a border, along walkways and in containers.
Protection InformationPP27,787
(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
      Moderate to high for first 24 hours, then reduce to low.
      50-75 ppm N
      35-42 days after sticking
      Use low mist settings; do not oversaturate rooting media. Root zone temperatures of 70°F (21°C).
    • Media pH:
      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
      Long day facultative
      Allow media to dry moderately between watering.
      Use a balanced fertilizer at a rate of 150 to 175 ppm N.
      Pinch After Transplant:
      Plant Growth Regulators:
      PGRs generally not needed
      Pests and Fungal Diseases:
      Spider mites, thrips. Watch for INSV/TSWV.
    • 1–qt. (10–cm) pot, 1 plant per pot:
      Unrooted: 10-14 wks Rooted: 8-10 wks
      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:
      April to September

Download Culture Guide