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Hypericum calycinum

Scientific Name : Hypericum calycinum
Common Name : St. John's Wort
Hardiness Zone : 5a - 9b
Hardiness Degree : -20°F (-29°C)
Blooming Season : Late Spring, Summer, Late Summer
Plant Habit : Spreading
Characteristics : Deer Resistant, Heat Tolerant, Shade Tolerant, Low Maintenance, Frost Tolerant, Drought Tolerant
Water : Light
Fertilizer : Once a month
Spacing : 15 - 18" (38 - 46cm)
Height : 15 - 18" (38 - 46cm)
Width : 15 - 24" (38 - 61cm)
Exposure : Partial Sun, Sun
General Information : Long, blue-green leaves with wide, solitary, bright golden yellow flowers.
Idea & Tips : Thrives in poor, sandy soils.
Mow it to the ground every year or two in Winter or early Spring to rejuvenate and induce new growth.
Grower Information : Long, blue-green leaves with wide, solitary, bright golden-yellow flowers.
Daylength : Used primarily as a groundcover. Blooms in late June to July.
Cool Treatment
Plant Maturity: Cold treatment is not required.
Plant Growth Regulators : Generally not needed.
  • Propagation Guide

  • Finishing Guide

  • Crop Scheduling

    • Bloom Months:
      May to July

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Marketing Information
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