Plant Profile: Hypericum frondosum

Taxonomy: Hypericum frondosum

Names

Cedarglade St. Johnswort, St. John's wort

  • Photo of Hypericum frondosum (Hypericum frondosums)

Phonetic Spelling:hy-PER-ih-kum frond-OH-sum

Genus:Hypericum

Species:frondosum

Family:Hypericaceae

St. John's Wort is indigenous to the southeastern United States, particularly thriving in the western mountainous regions of North Carolina. This compact shrub typically reaches heights and widths of 2 to 4 feet, showcasing a rounded and dense growth habit. It commonly grows in glades and on dry limestone ledges. The leaves can have a subtle bluish-green hue and remain evergreen in the warmer southern climates. Its striking yellow flowers, adorned with numerous stamens, bloom on new growth during June and July.

This plant thrives in rich sandy loam and prefers full sun to partial shade, although it can adapt to various well-drained soil types. It is often utilized as a hedge, for foundation planting, or in small clusters, and it is known to attract pollinators.

Family: Hypericaceae (Guttifereae)

Quick Identification Tips:

Hypericum frondosum Feature Summary

Hypericum frondosum Image Gallery

Tags

#cultivars
#small shrub
#yellow flowers
#native perennial
#native shrub
#mounding
#NC native
#summer flowers
#dense
#native garden
#pollinator plant
#wildflower garden
#fantz
#NC Native Pollinator Plant

Similar Plants

Hypericum frondosum Feature Summary

Attributes
South East U.S.A. to Texas
AL, CT, FL, GA, IN, KY, LA, MA, MS, NC, NY, SC, TN, TX, VA
Attracts pollinators
Fruit
A (2)3-5 celled oval capsule, sometimes fleshy.
Flowers
Five-petaled with bushy, dense stamens. Solitary or cymose, terminal or axillary. Yellow (usually) 5-petaled (rarely 4), 5 sepals (rarely 4); stamens numerous, in bundles or in showy boss.
Gold/Yellow
4-5 petals/rays
1-3 inches
Leaves
Linear to oblanceolate up to 3" long. Opposite or whorled, decussate, simple, entire; sessile or petiole short.
Deciduous
Broadleaf Evergreen
Green
Blue
Opposite
Whorled
Linear
Oblanceolate
1-3 inches
Bark
Reddish-brown exfoliating bark on mature shrubs
Dark Brown
Red/Burgundy
Stem
Contain 2 to 4(up to 6) ridges on newer growth, smooth and rounded on older growth.
Green
Blue
Whole Plant Traits
Perennial
Shrub
Native Plant
Wildflower
Deciduous
Broadleaf Evergreen
Erect
Mounding
Dense
Medium
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Good Drainage
Moist
Occasionally Dry
Coastal
Mountains
Piedmont
High Organic Matter
Loam (Silt)
Sand
Landscape
Rock Garden
Pollinator Garden
Native Garden
Foundation Planting
Hedge
Small groups
Naturalized Area
Rock Wall
Butterflies
Pollinators

Hypericum frondosum Attributes

Hypericum frondosum: Country Or Region Of Origin

South East U.S.A. to Texas

Hypericum frondosum: Distribution

AL, CT, FL, GA, IN, KY, LA, MA, MS, NC, NY, SC, TN, TX, VA

Hypericum frondosum: Wildlife Value

Attracts pollinators

Hypericum frondosum: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Hypericum frondosum Fruit

Hypericum frondosum: Fruit Description

A (2)3-5 celled oval capsule, sometimes fleshy.

Hypericum frondosum: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Hypericum frondosum Flowers

Hypericum frondosum: Flower Description

Five-petaled with bushy, dense stamens. Solitary or cymose, terminal or axillary. Yellow (usually) 5-petaled (rarely 4), 5 sepals (rarely 4); stamens numerous, in bundles or in showy boss.

Hypericum frondosum: Flower Color

filter_vintage
Gold/Yellow

Hypericum frondosum: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Hypericum frondosum: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Hypericum frondosum: Flower Bloom Time

Winter
Spring
Summer
Fall

Hypericum frondosum: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Hypericum frondosum: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Hypericum frondosum Leaves

Hypericum frondosum: Leaf Description

Linear to oblanceolate up to 3" long. Opposite or whorled, decussate, simple, entire; sessile or petiole short.

Hypericum frondosum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hypericum frondosum: Leaf Color

spa
Blue
spa
Green

Hypericum frondosum: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Hypericum frondosum: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Hypericum frondosum: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Hypericum frondosum: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Hypericum frondosum: Hairs Present

No
Yes

Hypericum frondosum: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Hypericum frondosum Bark

Hypericum frondosum: Bark Description

Reddish-brown exfoliating bark on mature shrubs

Hypericum frondosum: Bark Color

grass
Dark Brown
grass
Red/Burgundy

Hypericum frondosum: Surface/Attachment

Bumpy
Exfoliating
Fissured
Furrowed
Lenticels
Papery
Patchy
Peeling
Ridges
Scaly
Shaggy
Shiny
Shredding
Smooth
Spongy

Hypericum frondosum Stem

Hypericum frondosum: Stem Description

Contain 2 to 4(up to 6) ridges on newer growth, smooth and rounded on older growth.

Hypericum frondosum: Stem Color

grass
Blue
grass
Green

Hypericum frondosum: Stem Is Aromatic

No
Yes

Hypericum frondosum Whole Plant Traits

Hypericum frondosum: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Hypericum frondosum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hypericum frondosum: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Hypericum frondosum: Maintenance

Low
Medium
High

Hypericum frondosum: Texture

Fine
Medium
Coarse

Hypericum frondosum Cultural Conditions

Hypericum frondosum: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Hypericum frondosum: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Hypericum frondosum: NC Region

Coastal
Mountains
Piedmont

Hypericum frondosum: USDA Plant Hardiness Zone

thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Hypericum frondosum: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Hypericum frondosum Landscape

Hypericum frondosum: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Hypericum frondosum: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Hypericum frondosum: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Hypericum frondosum: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Hypericum frondosum: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees