Botanical Name: Hypericum calycinum
Common Name: Creeping St. Johnswort, Aaronsbeard  
Plant photo of: Hypericum calycinum
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Water Saving Tip:

Even though it's hot, your lawn only needs to be watered twice a week to stay healthy.

And don't water the whole lawn for a brown spot—drag out a hose.

  • Anatomy

  • Culture

  • Design

Plant Type

Broadleaf Evergreen, Shrub, Ground cover


Height Range



Flower Color



Flower Season

Summer, Fall


Leaf Color

Green, Blue Green, Light Green


Bark Color



Fruit Color



Fruit Season



Full, Half, Shade





Growth Rate



Soil Type

Sandy, Clay, Loam, Rocky, Unparticular


Soil Condition

Average, Poor, Well-drained, Dry


Soil pH

Neutral, Basic


Adverse Factors


Design Styles

Formal, Japanese, Meadow, Mediterranean, Seascape, Woodland


Accenting Features

Showy Flowers


Seasonal Interest

Summer, Fall


Location Uses

Entry, Shrub Border, Parking Strip, Parking Lot, With Rocks


Special Uses

Erosion Control, Filler, Mass Planting, Naturalizing, Small Spaces


Attracts Wildlife


Information by: Stephanie Duer
Photographer: Engstrom/Mullany/MJC
  • Description

  • Notes

Hypericum calycinum is semi-woody perennial groundcover. It has attractive blue-green foliage that stays evergreen in mild winters, sometimes taking on a purplish hue. It has interesting bright yellow flowers June through September, followed by red berries. It grows 12 to 18 inches tall and 24 inches wide, and spreads by underground runners. Does well in dry shade areas.
Tops of the plants are sometimes killed in severe winters, but trimming off the dead wood in late winter to early spring keeps things tidy. As it blooms on new wood, winter damage doesn't typically affect bud production. Does well in sandy soils and in dry shade.