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  • Brunnera macrophylla Frostbite Bloom
  • Brunnera macrophylla Frostbite Landscape

Brunnera macrophylla Frostbite

Scientific Name : Brunnera macrophylla
Common Name : Great Forget-Me-Not
Hardiness Zone : 4a - 9a
Hardiness Degree : -25°F (-32°C)
Blooming Season : Spring
Plant Habit : Mounded
Characteristics : Attracts Bees, Deer Resistant, Rabbit Resistant, Water/Rain tolerant, Colorful/Attractive Foliage, Shade Tolerant, Low Maintenance, Frost Tolerant
Water : Medium
Fertilizer : Once a month
Spacing : 15 - 18" (38 - 46cm)
Height : 6 - 9" (15 - 23cm)
Width : 13 - 16" (33 - 41cm)
Exposure : Shade
General Information : Low-maintenance Frostbite brings attractive silver foliage to the shade for years of enjoyment. Mixes seamlessly into a wide range of shade garden designs. Bright blue flowers are an extra bonus in Spring!
Idea & Tips : Plant in well-drained soil in a shaded location. Spent flowers may be removed to keep plants looking tidy. Fertilize Spring and Summer to keep plants healthy and actively growing. Remove old foliage in Fall or early Winter once plants have gone dormant.
Grower InformationPerfect balance of silver-to-green foliage for shade gardens.
  • Great late-season performer, holding its striking pattern with minimal browning.
  • Heart-shaped leaves are slightly smaller, allowing production in smaller containers as well as providing a nice texture in the landscape.  
  • Deer and rabbit resistant; frost tolerant.
  • Produces bright blue flowers in Spring.
Protection InformationPP35,059
(Flowering Only License)
Breeder : Darwin Perennials
  • Propagation Guide
    • Media EC/pH:
      EC 0.75-0.80 mmhos/pH 5.8-6.2
      Soil Temperature:
      68-72°F (21-22°C)
      Rooting Hormone:
      Low mist or tenting
      Balanced fertilizer 75-100 ppm
      7-8 weeks
      This is a tissue culture raised item. Please see our detailed tissue culture propagation guide at This item is generally a Summer propagated item. Excessive heat can cause losses.
    • Media pH:
      Nights: 50 to 55°F (10 to 13°C) Days: 60 to 65°F (16 to 18°C)
      Light Level (fc):
      1,500 to 2,500
      Yes, required for flowering; however, plants sell as foliage.
      Day length neutral
      Allow media to dry slightly between watering.
      Use a balanced fertilizer at a rate of 100 to 125 ppm.
      Pinch After Transplant:
      Plant Growth Regulators:
      PGRs generally not needed
      Pests and Fungal Diseases:
      Pythium and rhizoctonia can result from overwatering.
    • 1–qt. (10–cm) pot, 1 plant per pot:
      Not recommended
      1–gal. (15–cm) pot, 1 plant per pot:
      10-12 wks
      2 to 3–gal. (25 to 30–cm) pot, 3 plants per pot:
      12-14 wks
      Bloom Months:
      April to May

Download Culture Guide