Hypericum calycinum
Creeping St. John's wort, Aaron's B
Description
Hypericum calycinum is an evergreen ground cover. It grows 1' high and spreads by underground runners. In some areas, it is considered invasive because of these runners. Yellow flowers bloom in the summer. Foliage is dark green in sun and yellow green in shade. It prefers sandy and alkaline soil. It can grow in full sun to full shade. It does well in average, well draining soil. In frost-free areas, this ground cover is evergreen and in cold winter areas, this plant is deciduous but comes back in spring. This plant does well in covering areas with tree roots. It can be planted on slopes to stabilize hillsides. It does not do well in humid areas, suffering from root rot and wilt.
Plant Type
Ground cover
Height Range
Under 1', 1-3'
Flower Color
Yellow
Flower Season
Summer
Leaf Color
Dark Green, Yellow Green
Bark Color
n/a
Fruit Color
n/a
Fruit Season
n/a
Sun
Full, Half, Shade
Water
Medium, Extra in Summer
Growth Rate
Fast
Soil Type
Sandy, Loam, Rocky
Soil Condition
Average, Well-drained, Dry
Soil pH
Basic
Adverse Factors
Invasive
Design Styles
English Cottage, Meadow, Mediterranean, Seascape, Woodland
Accenting Features
Showy Flowers
Seasonal Interest
Summer
Location Uses
Lawn, Parking Strip, Parking Lot, Roadside, Walkways, With Rocks
Special Uses
Cascade, Erosion Control, Mass Planting, Lawn Substitute, Naturalizing
Attracts Wildlife
n/a
Mulching and adding compost to soil can minimize evaporation and help soil absorb and store water.