Hypericum calycinum 
A beautiful and versatile plant which can be used as a flowering shrub or ground cover. Easily grown in average, medium wet, well-drained soil in full sun to part shade. Tolerates a wide range of soils, and thrives on sandy soils in full sun. Low grower with bright yellow flowers over semi-evergreen foliage. Foliage evergreen in warm winter climates. Spreads rapidly by underground stems.
Common Name: St John's Wort
Mature Height: 6-12"
Flowering: Bright yellow flowers
Spacing: Plant 18" apart for use as a groundcover |