Botanical Name: Hypericum calycinum
Common Name: Creeping St. Johnswort, Aaron's Bea  
Plant photo of: Hypericum calycinum
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  • Anatomy

  • Culture

  • Design

Plant Type

Shrub, Ground cover


Height Range



Flower Color



Flower Season

Summer, Fall


Leaf Color

Dark Green


Bark Color



Fruit Color



Fruit Season



Full, Half, Shade



Low, Extra in Summer


Growth Rate



Soil Type



Soil Condition

Poor, Well-drained, Dry


Soil pH

Neutral, Basic


Adverse Factors


Design Styles

English Cottage, Meadow, Mediterranean, Seascape, Woodland


Accenting Features

Fall Color, Showy Flowers


Seasonal Interest

Summer, Fall


Location Uses

Entry, Parking Strip, Park, Parking Lot, Roadside


Special Uses

Cascade, Erosion Control, Filler, Mass Planting, Lawn Substitute


Attracts Wildlife


Information by: Jerry Sortomme Editor
Photographer: Engstrom/Mullany/MJC
  • Description

  • Notes

Hypericum calycinum is an evergreen perennial in warm winter areas. Grows 1' high and 1'-2' in spread, and spreads by underground runners therefore considered invasive in some areas. Yellow flowers bloom in summer and fall; it will bloom profusely if in full sun, less if planted in shade. This ground cover is great for stabilizing difficult slopes or for covering bare patches under oak trees. It does best with regular watering but will survive drought conditions.
Planting Instructions: 1. Dig a hole 2 times the width and 1 and 1/2 times the height of the container. 2. Set rootball just above ground level. 3. Mix soil with 25% amendment and %75 soil. 4. Backfill with amended soil. 5. Build basin and water.