Plant Profile: Hypericum densiflorum

Taxonomy: Hypericum densiflorum

Names

Bushy St. John's Wort, Dense St. John's Wort

  • Photo of Hypericum densiflorum (Hypericum densiflorums)

Phonetic Spelling:

Genus:Hypericum

Species:densiflorum

Family:Hypericaceae

Bushy St. John's Wort is a native shrub that can reach heights of up to 7 feet and spread about 6 feet wide. Found primarily in the eastern United States and extending westward to Texas, this plant thrives in acidic soils under moist to wet conditions, often near streams, ponds, lake edges, seepage slopes, and wet meadows. In North Carolina, it is typically located in coastal areas, with rare sightings in the Piedmont and mountainous regions. During the summer, it produces clusters of vibrant yellow flowers, while its leaves are lance-shaped, measuring between 2 to 3 inches in length and displaying a rich green color.

This shrub flowers on new growth, making early spring an ideal time for pruning. It is easy to cultivate in average, well-drained garden soil that remains moist, and it flourishes in full sun to partial shade. Ideal for planting in groups, shrub borders, or as a hedge, it also enhances native or pollinator gardens and is well-suited for slopes and rock gardens due to its remarkable adaptability.

Hypericum densiflorum Feature Summary

Hypericum densiflorum Image Gallery

Tags

#yellow flowers
#native perennial
#slopes
#stream banks
#pond margins
#NC native
#summer flowers
#butterfly friendly
#bog gardens

Similar Plants

Hypericum densiflorum Feature Summary

Attributes
Fruit
Cone-shaped seed capsules split to release seeds
Flowers
Flowers yellow with 5 petals and multiple stamens giving them a frilly look in dense flat-topped cymes in June to Sept.
Gold/Yellow
4-5 petals/rays
< 1 inch
Leaves
Dark green, lance-shaped leaves are 2-3" long
Lanceolate
1-3 inches
Bark
Smooth bronze bark
Light Brown
Whole Plant Traits
Perennial
Native Plant
Rounded
Erect
Dense
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)
Acid (<6.0)
Good Drainage
Moist
Occasionally Dry
Coastal
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
3a
3b
Clay
Loam (Silt)
Sand
Shallow Rocky
Landscape
Pollinator Garden
Rain Garden
Native Garden
Border
Foundation Planting
Drought
Erosion
Black Walnut
Slope/Bank
Riparian
Pond

Hypericum densiflorum Attributes

Hypericum densiflorum: Country Or Region Of Origin

Eastern U.S.A.

Hypericum densiflorum: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Hypericum densiflorum Fruit

Hypericum densiflorum: Fruit Description

Cone-shaped seed capsules split to release seeds

Hypericum densiflorum: Fruit Type

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

Hypericum densiflorum: Display/Harvest Time

Fall
Spring
Summer
Winter

Hypericum densiflorum Flowers

Hypericum densiflorum: Flower Description

Flowers yellow with 5 petals and multiple stamens giving them a frilly look in dense flat-topped cymes in June to Sept.

Hypericum densiflorum: Flower Color

filter_vintage
Gold/Yellow

Hypericum densiflorum: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Hypericum densiflorum: Flower Value To Gardener

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

Hypericum densiflorum: Flower Bloom Time

Winter
Spring
Summer
Fall

Hypericum densiflorum: 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 densiflorum: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Hypericum densiflorum: Flower Size

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

Hypericum densiflorum Leaves

Hypericum densiflorum: Leaf Description

Dark green, lance-shaped leaves are 2-3" long

Hypericum densiflorum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hypericum densiflorum: Leaf Color

spa
Green

Hypericum densiflorum: Deciduous Leaf Fall Color

spa
Gold/Yellow

Hypericum densiflorum: 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 densiflorum: Leaf Margin

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

Hypericum densiflorum: Hairs Present

No
Yes

Hypericum densiflorum: Leaf Length

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

Hypericum densiflorum Bark

Hypericum densiflorum: Bark Description

Smooth bronze bark

Hypericum densiflorum: Bark Color

grass
Light Brown

Hypericum densiflorum Whole Plant Traits

Hypericum densiflorum: 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 densiflorum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hypericum densiflorum: 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 densiflorum: Growth Rate

Slow
Medium
Rapid

Hypericum densiflorum: Maintenance

Low
Medium
High

Hypericum densiflorum Cultural Conditions

Hypericum densiflorum: 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 densiflorum: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Hypericum densiflorum: Soil Drainage

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

Hypericum densiflorum: NC Region

Coastal
Mountains
Piedmont

Hypericum densiflorum: USDA Plant Hardiness Zone

thermostat
3a
thermostat
3b
thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Hypericum densiflorum: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Hypericum densiflorum Stem

Hypericum densiflorum: Stem Is Aromatic

No
Yes

Hypericum densiflorum Landscape

Hypericum densiflorum: 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 densiflorum: 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 densiflorum: 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 densiflorum: 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 densiflorum: Attracts

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