Atlantic St. John's Wort Hypericum tenuifolium
Other Common Name(s):
Previously known as:
- Hypericum galioides var. reductum
- Hypericum reductum
- Phonetic Spelling
- hy-PER-ih-kum
- Description
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Atlantic St. John's-wort or Sandhill St. John's-wort is a species of flowering plant in the St. John's wort family, Hypericaceae. It is native to the Southeastern United States. Its habitat includes dry, open, sandy areas such as pine flatwoods, pine savannas, and sandhills. Atlantic St. John's-wort is a small, spreading shrub growing 4–20 in. tall and forming mats. This plant is slightly salt tolerant.
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
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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- Tags:
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Attributes:
- Genus:
- Hypericum
- Species:
- tenuifolium
- Family:
- Hypericaceae
- Life Cycle:
- Woody
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- South East U.S.A
- Wildlife Value:
- This plant attracts bees and other pollinators.
- Dimensions:
- Height: 1 ft. 0 in. - 2 ft. 0 in.
- Width: 1 ft. 0 in. - 2 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Native Plant
- Shrub
- Wildflower
- Woody Plant Leaf Characteristics:
- Broadleaf Evergreen
- Habit/Form:
- Dense
- Mounding
- Growth Rate:
- Slow
- Maintenance:
- Low
- Texture:
- Medium
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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 Texture:
- Sand
- Soil Drainage:
- Good Drainage
- NC Region:
- Coastal
- USDA Plant Hardiness Zone:
- 8b, 8a, 9b, 9a, 10b, 10a
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Fruit:
- Display/Harvest Time:
- Fall
- Summer
- Fruit Type:
- Capsule
- Fruit Description:
- A (2)3-5 celled capsule, sometimes fleshy. Displays from July to October.
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Cyme
- Flower Bloom Time:
- Summer
- Flower Description:
- 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 September.
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Leaves:
- Woody Plant Leaf Characteristics:
- Broadleaf Evergreen
- Leaf Color:
- Green
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Whorled
- Leaf Margin:
- Entire
- Hairs Present:
- No
- Leaf Description:
- Opposite or whorled, decussate, simple, entire; sessile or petiole short.
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Stem:
- Stem Is Aromatic:
- No
- Stem Description:
- Contain 2 to 4(up to 6) ridges on newer growth, smooth and rounded on older growth.
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Landscape:
- Landscape Location:
- Coastal
- Naturalized Area
- Landscape Theme:
- Native Garden
- Pollinator Garden
- Design Feature:
- Small Tree
- Attracts:
- Bees
- Pollinators
- Resistance To Challenges:
- Salt
