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Hypericum prolificum (Shrubby St. John’s Wort)

Shrubby St. John's-wort, Hypericum spathulatum

Hypericum prolificum, Shrubby St. John's-wort, Hypericum spathulatum, Yellow Shrub, yellow flowers

Hypericum prolificum (Shrubby St. John’s Wort) is an upright deciduous shrubby perennial of compact, rounded habit with showy, bright yellow flowers, 1 in. wide (2.5 cm), adorned with a prominent bouquet of yellow stamens. Blooming profusely from early to late summer, the blossoms are borne singly or in few-flowered clusters and cover the shrub. They give way to interesting cone-shaped dry pods which split in the fall and persist all winter. Densely branched, its stout, stiff, erect stems are clothed with smooth, lance-shaped, dark blue-green leaves, 2-3 in. long (5-7 cm), that turn yellow-green in fall. The bark of older stems exfoliates to reveal attractive, pale orange inner bark. Useful in the shrub border, this shrub adapts to a variety of moisture regimes and is even flood tolerant.

  • Grows up to 1-4 ft. tall and wide (30-120cm).
  • A full sun to part shade lover, this plant is easily grown in medium moisture, well-drained soils. Tolerates a wide range of soils, including dry rocky or sandy soils. Some drought tolerance once established.
  • Low maintenance, this plant is also generally pest and disease free. Keep an eye out for root rot and wilt in hot and humid climates. Deer resistant.
  • Perfect for banks and slopes, shrub borders or as a hedge.
  • Prune in early spring as this plant blooms on new growth. Seeds can be used for propagation but softwood cuttings, which root easily, are the usual method.
  • Ingestion may cause severe discomfort
  • Native to central and eastern North America.

Requirements

Hardiness 3 - 8
Plant Type Perennials, Shrubs
Plant Family Hypericaceae
Genus Hypericum
Common names Shrubby St. John's-wort, St. John's Wort
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early, Mid, Late)
Height 1' - 4'
(30cm - 120cm)
Spread 1' - 4'
(30cm - 120cm)
Spacing 36" - 48"
(90cm - 120cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Native Plants United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Jersey, New York, Michigan, Iowa, Wisconsin, Indiana, Minnesota, Illinois, Ohio, Missouri, Midwest, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Florida, Georgia, Kentucky, Southwest, Texas, Oklahoma
Tolerance Drought, Deer, Dry Soil, Rocky Soil, Clay Soil
Attracts Birds
Garden Uses Banks And Slopes, Beds And Borders, Hedges And Screens
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Alternative Plants to Consider

Hypericum densiflorum (Bushy St. John’s Wort)
Hypericum ascyron (Great St. John’s Wort)
Hypericum frondosum ‘Sunburst’ (St. John’s Wort)
Hypericum x moserianum ‘Tricolor’ (St. John’s Wort)
Hypericum x hidcoteense ‘Hidcote’ (St. John’s Wort)
Hypericum kalmianum Cobalt-n-Gold™ (Kalm St. John’s Wort)

Recommended Companion Plants

Symphyotrichum oblongifolium (Aromatic Aster)
Hibiscus moscheutos (Hardy Hibiscus)
Monarda fistulosa (Wild Bergamot)
Rudbeckia hirta (Black-Eyed Susan)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 3 - 8
Plant Type Perennials, Shrubs
Plant Family Hypericaceae
Genus Hypericum
Common names Shrubby St. John's-wort, St. John's Wort
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early, Mid, Late)
Height 1' - 4'
(30cm - 120cm)
Spread 1' - 4'
(30cm - 120cm)
Spacing 36" - 48"
(90cm - 120cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Native Plants United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Jersey, New York, Michigan, Iowa, Wisconsin, Indiana, Minnesota, Illinois, Ohio, Missouri, Midwest, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Florida, Georgia, Kentucky, Southwest, Texas, Oklahoma
Tolerance Drought, Deer, Dry Soil, Rocky Soil, Clay Soil
Attracts Birds
Garden Uses Banks And Slopes, Beds And Borders, Hedges And Screens
How Many Plants
Do I Need?
Not sure which Hypericum (St. John's Wort) to pick?
Compare Now

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