ST. JOHNSWORT

FAMILY: Hypericaceae | GENUS: HYPERICUM

TYPE
  • Deciduous
  • Evergreen
  • Perennials
  • Shrubs
SUN EXPOSURE
  • Partial Shade
WATER
  • Moderate Water
  • Regular Water

Plant Details

Large group of shrubs and perennials bearing yellow flowers that resemble single roses with a prominent sunburst of stamens in center. Open, cup-shaped, five-petaled blooms range in color from creamy yellow to gold; flowers may be solitary or in clusters. Neat leaves vary in form and color. Plants are useful for summer flower color and fresh green foliage. Various kinds are used for mass plantings, ground covers, informal hedges, borders. Most types resist deer damage. Perform especially well in mild, moist areas.

hypericum beanii(Hypericum patulum henryi)

  • Evergreen shrub or perennial; more perennial-like in Upper South.
  • Zones US, MS; USDA 6-7.
  • From China.
  • To 4 feet tall and slightly wider, with light green, oblong leaves on graceful, willowy branches.
  • Flowers brilliant golden yellow, 2 inches across, midsummer into fall.
  • Good for low, untrimmed hedge, mass planting.
  • Shabby in winter.

blue ridge st

JOHNSWORT

hypericum buckleyi

  • Deciduous shrub.
  • Zones US, MS, LS; USDA 6-8.
  • Native to mountains from North Carolina to Georgia.
  • Spreading plant to 1 feet high; space plants 2 feet apart for ground cover.
  • Rich green leaves to 1 inches long, rounded at tip.
  • Golden yellow flowers to 1 inches wide bloom in summer.
  • Appalachian Sun is compact at 10 inches high and 18 inches wide.

aaron's beard, creeping st

JOHNSWORT

hypericum calycinum

  • Evergreen to semievergreen shrub; tops often killed in cold winters but come back in spring.
  • Zones US, MS, LS, CS; USDA 6-9.
  • From Bulgaria, Turkey.
  • To 1 feet high, spreading by vigorous underground stems.
  • Short-stalked leaves to 4 inches long are medium green in sun, yellow-green in shade.
  • Bright yellow, 3 inches-wide flowers bloom all summer.
  • A tough, dense ground cover that competes successfully with tree roots, takes poor soil.
  • Fast growing; will control erosion on hillsides.
  • May be invasive unless confined.
  • Plant from flats or as rooted stems 112 feet apart.
  • Clip or mow tops every 2 or 3 years during dormant season.

blueleaf st

JOHNSWORT

hypericum frondosum

  • Deciduous shrub; evergreen in mildest areas.
  • Zones US, MS, LS; USDA 6-9.
  • Native to southeastern U.S. Grows 13 feet tall, with mounding form.
  • Blue-green leaves set off clusters of 112 inches., bright yellow flowers that bloom from midsummer to early autumn.
  • Sunburst forms a tight mound to 3 feet tall and wide.

hypericum 'Hidcote(Hypericum patulum 'Hidcote')

  • Evergreen to semievergreen shrub.
  • Zones US, MS, LS; USDA 6-8.
  • To 4 feet tall and 5 feet wide.
  • Leaves 23 inches long.
  • Yellow flowers, 2123 inches wide, bloom all summer.

gold flower

hypericum xmoserianum

  • Evergreen subshrub or perennial.
  • Zones US, MS, LS; USDA 6-8.
  • Mounding plant with arching, reddish stems; reaches 23 feet tall and wide.
  • Leaves are 2 inches long, with blue-green undersides.
  • Blooms in summer and possibly into fall, with golden yellow, 212 inches flowers borne singly or in clusters of up to five.
  • Cut back in early spring.
  • Tricolor has gray-green leaves edged in pink and white.

hypericum patulum 'Sungold

  • Semievergreen shrub.
  • Zones US, MS, LS; USDA 6-8.
  • Selection of a species from China.
  • Twiggy, rounded growth to 12 feet tall, 23 feet wide.
  • Oval, pointed 2 inches-long leaves.
  • Golden yellow, 2- to 3 inches-wide flowers bloom in summer.
  • Sometimes sold as Hypericum kouytchense.

shrubby st

JOHNSWORT

hypericum prolificum

  • Deciduous shrub.
  • Zones US, MS, LS; USDA 6-8.
  • Native from New Jersey to Georgia.
  • Slow, dense grower to 14 feet high and wide.
  • Narrow, shiny, dark green leaves grow 13 inches long.
  • Bears 1 inches., yellow blossoms late spring to late summer.
  • Attractive in masses.

atlantic st

JOHNSWORT

hypericum reductum

  • Evergreen shrub.
  • Zones MS, LS, CS; USDA 7-9.
  • Native to sandy, scrubby sites from North Carolina to Florida and Alabama.
  • Forms a mat to 1112 feet high, 24 feet wide.
  • Aromatic, needlelike green leaves turn bronzy in winter.
  • Small (to 23 inches-wide) yellow flowers bloom in early summer.
  • Once established, needs no supplemental watering.

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