Plant FinderPlant Finder Graphic
Hypericum calycinum
Hypericum calycinum

Click to Enlarge

Zone
Zones 2B, 3-24, 31-34, 39
Full SunPartial Sun
Full, Partial
Regular Water
Moderate

Hypericum frondosum

St. Johnswort
Hypericaceae
Deciduous, Evergreen, Shrubs

HYPERICUM

All bear single flowers with prominent sunburst of stamens in center. Shal­lowly cup-shaped, five-petaled blooms range in color from creamy yellow to gold; flowers may be solitary or in clusters. Neat, fresh green foliage. Various species used for mass plantings, ground covers, informal hedges, borders. Grow especially well in mild, moist regions.

A difficult-to-control rust is extensively infecting plantings (especially those of the species H. calycinum) in the Pacific North­west. Remove and destroy blighted leaves and any leaf litter; avoid overhead watering of plants in the evening.

Hypericum frondosum

Native to the southeastern United States. This shrub is everygreen in mild climates, deciduous where winters are cold. It grows 1–3 ft. tall, with mounding form. Blue-green leaves set off clusters of 1 1/2-in., bright yellow flowers that bloom from midsummer to early fall.

You Might Also Like...

Hypericum hybrid 'Hidcote'

Grows 4 ft. tall and 5 ft. wide in mildest climates; in cold areas, it acts more like a root-hardy per...

Hypericum calycinum

Evergreen to semievergreen shrub from Bulgaria, Turkey. Grows to 1 ft. high and spreads by vigorous un...

Hypericum androsaemum

Shade-tolerant native shrub from Europe, western Asia. To 3 ft. tall and wide, with stems arching towa...

Find Your Sunset Climate Zone

Find Your Sunset Climate Zone

View Maps Learn More

Advertisement