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St. John's Wort Hypericum prolificum

Other Common Name(s):

Phonetic Spelling
hy-PER-ih-kum pro-LIF-ih-kum
Description

Low dense; dark green leaves; no appreciable fall color; slow grower; drought tolerant. Prune in early spring.

Habitat: Bogs, seepages, dry rocky forests, rock outcrops, riverside prairies

Wildlife Value: Fruits attract birds.

Form:  dense mound; stout, stiff, erect stems; rounded

Exposure:  range of soil types; tolerates dry soil

Family name Hypericaceae (Guttifereae)

Quick ID Hints:

  • Stems 2-4 ridged on newer growth
  • Leaves paired or whorled, sessile or short-stalked
  • 5-petaled yellow flowers with numerous stamens

Deciduous or evergreen shrub, small tree or herb. 

There are around 400 species of Hypericum, which include herbs, shrubs and trees, with different bloom times and cultural requirements. 

 

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#bees#deciduous#drought tolerant#wildlife plant#yellow flowers#mounding#pollinator plant#fantz#food source fall#food source herbage#food source nectar#food source pollen#coastal FAC#bird friendly#food source hard mast fruit#mammals#Piedmont Mountains FACU#audubon
 
Cultivars / Varieties:
Tags:
#bees#deciduous#drought tolerant#wildlife plant#yellow flowers#mounding#pollinator plant#fantz#food source fall#food source herbage#food source nectar#food source pollen#coastal FAC#bird friendly#food source hard mast fruit#mammals#Piedmont Mountains FACU#audubon
  • Attributes:
    Genus:
    Hypericum
    Species:
    prolificum
    Family:
    Hypericaceae
    Life Cycle:
    Perennial
    Wildlife Value:
    birds
    Particularly Resistant To (Insects/Diseases/Other Problems):
    Heat, drought, and soil compaction tolerant.
    Dimensions:
    Height: 2 ft. 0 in. - 4 ft. 0 in.
    Width: 2 ft. 0 in. - 4 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Dense
    Mounding
    Growth Rate:
    Medium
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    4a, 4b, 5b, 5a, 6a, 6b, 7a, 7b, 8b, 8a
  • Fruit:
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Description:
    A (2)3-5 celled capsule, sometimes fleshy. Displays from July to November.
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Inflorescence:
    Cyme
    Flower Bloom Time:
    Summer
    Flower Size:
    < 1 inch
    Flower Description:
    Bright yellow flowers in summer on current season's growth; dry capsules persist all winter. Solitary or cymose, terminal or axillary. Yellow (usually) 5-petaled (rarely 4), 5 sepals (rarely 4); stamens numerous, in bundles or in showy boss. Blooms from June to October.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Whorled
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    1-3 inches
    Leaf Description:
    Dark green with no appreciable fall color. Opposite or whorled, decussate, simple, entire; sessile or petiole short.
  • Stem:
    Stem Is Aromatic:
    No
    Stem Description:
    Contain 2 to 4(up to 6) ridges on newer growth, smooth and rounded on older growth.
  • Landscape:
    Landscape Location:
    Naturalized Area
    Landscape Theme:
    Butterfly Garden
    Native Garden
    Pollinator Garden
    Design Feature:
    Accent
    Attracts:
    Butterflies
    Pollinators
    Small Mammals
    Songbirds