Key Features

• Growth Habit:
  • Low-growing, spreading perennial groundcover
  • Typically grows 12–18 inches tall and spreads 24–36 inches or more by underground rhizomes
  • Dense, mat-forming habit ideal for erosion control
• Bloom Color:
  • Bright golden-yellow flowers with showy yellow stamens
• Fragrance:
  • Little to no noticeable fragrance
• Fruit Flavor:
  • Not grown for edible fruit production
• Culinary Uses:
  • No culinary uses
• Medicinal & Traditional Uses:
  • Related Hypericum species have a long history of use in traditional herbal medicine.
  • Hypericum calycinum is grown primarily as an ornamental groundcover and is not generally recommended for medicinal use.
• Wildlife Attraction & Pest Resistance:
  • Attracts bees and beneficial pollinators
  • Deer resistant
  • Rabbit resistant
  • Generally resistant to pests and diseases
  • Excellent for erosion control on slopes and banks
• Planting Zones: USDA Zones 5–9
• Sun Preferences:
  • Full sun to partial shade
  • Produces the heaviest flowering in full sun but tolerates shade well
• Drought Tolerance:
  • Moderate to high once established
• When to Prune:
  • Prune in late winter or early spring before new growth begins
  • Trim after flowering if needed to maintain a tidy appearance or control spreading
  • Older plantings can be rejuvenated by cutting stems back by one-third every few years

Planting Instructions (From a 3.5" Pot into the Ground)

1. Choose the Location

• Select a location with well-drained soil in full sun or partial shade.
• Excellent for slopes, banks, woodland gardens, borders, and mass plantings.

2. Prepare the Soil

• Loosen soil 8–10 inches deep.
• Mix in compost if soil is poor or heavily compacted.

3. Dig the Hole

• Dig a hole twice as wide as the 3.5" pot and the same depth as the root ball.

4. Remove from Pot

• Carefully remove the plant from its container.
• Gently loosen any circling roots.

5. Plant

• Position the root ball level with the surrounding soil.
• Backfill with soil and gently firm around the roots.

6. Water Thoroughly

• Water deeply immediately after planting.
• Keep soil evenly moist during the first growing season while roots establish.

7. Mulch

• Apply a 2-inch layer of mulch around the plant to conserve moisture and reduce weeds, keeping mulch away from the stems.

8. Spacing

• Space plants 18–24 inches apart for quick groundcover establishment.

Overwintering Creeping St. John's Wort

In-Ground Plants

• Fully hardy throughout USDA Zones 5–9.
• Evergreen in mild climates and semi-evergreen to deciduous in colder regions.
• Foliage may bronze or partially die back after hard freezes but typically recovers in spring.

Winter Care Tips

• Apply a light layer of mulch around the root zone after the ground freezes in colder climates.
• Water occasionally during prolonged winter dry spells if the ground is not frozen.
• Avoid overly wet soils during winter to prevent root problems.

Spring Maintenance

• Remove winter-damaged stems in early spring.
• Prune lightly to encourage dense, vigorous new growth.
• Fertilize lightly in spring if desired to promote healthy foliage and flowering.

Container-Grown Plants

• Move containers to a sheltered location in colder climates.
• Water sparingly during dormancy, allowing the soil to dry slightly between waterings.
• Protect containers from repeated freeze-thaw cycles.

Creeping St. John's Wort, also known as Aaron's Beard, is an exceptionally dependable groundcover that combines glossy evergreen foliage, vibrant golden blooms, and excellent erosion-control capabilities. Its adaptability, low-maintenance nature, and ability to thrive in both sun and partial shade make it a superb choice for slopes, borders, woodland gardens, and other challenging landscape areas where long-lasting beauty and reliable performance are desired.