Golden St. John's wort Hypericum frondosum
Other Common Name(s):
- Phonetic Spelling
- hy-PER-ih-kum frond-OH-sum
- Description
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Cedar glade St. John's-wort is a semi-evergreens to evergreen perennial shrub in the Hypericaceae family native to the central and southeastern United States. It is found in dry, rocky habitats of cedar glades, rocky woodlands and in dry, disturbed areas. It is found in the Piedmont and mountains of NC.
Cedar glade St. John's-wort is a smal shrub that grows 2-4 feet tall and wide with a rounded, dense form. It prefers rich sandy loams in full sun to partial shade but is adaptable to other soils if well-drained. Prune in spring as blooms appear on new wood. It is drought-tolerant once established
The foliage may appear slightly bluish-green and is evergreen in its southern range. The showy yellow flowers are bright yellow with numerous stamens in June through July, providing color during the summer months. The bark is reddish-brown and exfoliating.
Use Cedar glade St. John's-wort as a short hedge or in shrub borders, as a foundation plant or in small groups. Attractive to pollinators for pollinator and native gardens.
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
Insects, Diseases, and Other Plant Problems: Wilt and root rot can be significant problems, particularly in hot and humid climates of the South. Susceptible to nematodes, which can cause root rot. Leaf spot, mildew and rust are less threatening.
- See this plant in the following landscape :
- Cultivars / Varieties:
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- 'Sunburst'
Slightly larger flowers on a 3 foot plant
- 'Sunburst'
- 'Sunburst'
- Tags:
- Cultivars / Varieties:
-
- 'Sunburst'
Slightly larger flowers on a 3 foot plant
- 'Sunburst'
- 'Sunburst'
- Tags:
-
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Attributes:
- Genus:
- Hypericum
- Species:
- frondosum
- Family:
- Hypericaceae
- Life Cycle:
- Woody
- Country Or Region Of Origin:
- South East U.S.A. to Texas
- Distribution:
- AL, CT, FL, GA, IN, KY, LA, MA, MS, NC, NY, SC, TN, TX, VA
- Wildlife Value:
- Attracts pollinators
- Dimensions:
- Height: 3 ft. 0 in. - 4 ft. 0 in.
- Width: 3 ft. 0 in. - 4 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Native Plant
- Perennial
- Shrub
- Wildflower
- Woody Plant Leaf Characteristics:
- Broadleaf Evergreen
- Semi-evergreen
- Habit/Form:
- Dense
- Erect
- Mounding
- Growth Rate:
- Medium
- 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:
- Loam (Silt)
- Sand
- Shallow Rocky
- Soil pH:
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Dry
- Available Space To Plant:
- 3 feet-6 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
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Fruit:
- Fruit Color:
- Black
- Brown/Copper
- Fruit Type:
- Capsule
- Fruit Length:
- < 1 inch
- Fruit Width:
- < 1 inch
- Fruit Description:
- A two- to five-celled oval capsule with black to brown seeds. Can persist into winter.
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Flowers:
- Flower Color:
- Gold/Yellow
- Flower Inflorescence:
- Cyme
- Flower Value To Gardener:
- Showy
- Flower Bloom Time:
- Summer
- Flower Shape:
- Dome
- Flower Petals:
- 4-5 petals/rays
- Flower Size:
- 1-3 inches
- Flower Description:
- Yellow five-petaled flowers with many stamens that mostly grow solitary in the leaf axils or on terminal branches, occasionally in a group.
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Leaves:
- Woody Plant Leaf Characteristics:
- Broadleaf Evergreen
- Semi-evergreen
- Leaf Color:
- Blue
- Green
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Whorled
- Leaf Shape:
- Linear
- Oblanceolate
- Leaf Margin:
- Entire
- Hairs Present:
- No
- Leaf Length:
- 1-3 inches
- Leaf Width:
- < 1 inch
- Leaf Description:
- Linear to oblanceolate blue-green leaves are up to 3 inches long. Opposite or whorled leaves are decussate, simple, entire and sessile or with a short petiole.
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Bark:
- Bark Color:
- Dark Brown
- Red/Burgundy
- Surface/Attachment:
- Exfoliating
- Bark Description:
- Reddish-brown exfoliating bark on mature shrubs
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Stem:
- Stem Color:
- Blue
- Green
- Stem Is Aromatic:
- No
- Stem Description:
- Contain 2 to 4 ridges on newer growth, smooth and rounded on older growth.
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Landscape:
- Landscape Location:
- Lawn
- Naturalized Area
- Landscape Theme:
- Drought Tolerant Garden
- Native Garden
- Pollinator Garden
- Design Feature:
- Foundation Planting
- Hedge
- Small groups
- Attracts:
- Bees
- Butterflies
- Pollinators
- Resistance To Challenges:
- Drought
