Hypericum calycinum
St. Johnswort
Description
Hypericum calycinum is an evergreen perennial groundcover. It grows 1' high and 1'-2' in spread, and spreads by underground runners. Yellow flowers bloom in the summer. Foliage is dark green. In some areas, it is considered invasive. It prefers sandy and alkaline soil.
Plant Type
Shrub, Ground cover
Height Range
1-3'
Width Range
1-3'
Flower Color
Yellow
Flower Season
Spring, Summer, Fall
Leaf Color
Green, Dark Green, Light 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
Soil Condition
Average, Poor, Well-drained, Dry
Soil pH
Basic
Adverse Factors
Invasive
Design Styles
Meadow, Mediterranean, Seascape, Woodland
Accenting Features
Showy Flowers
Seasonal Interest
Summer
Location Uses
Parking Strip, Parking Lot, With Rocks
Special Uses
Erosion Control, Filler, Mass Planting, Lawn Substitute, Small Spaces
Attracts Wildlife
n/a
Water Saving Tip:
Water between sunset and sunrise when temperatures and wind are the lowest.