dense St. John's-wort

Plant Type

Shrub (less than 10 ft)

Life Cycle

Perennial

Typical Size

2-7 ft. tall
3-6 ft. wide

Tolerant of

Drought

Propagation

By seed, By cutting

Plant Propagation Notes

Semi-hardwood cuttings taken in summer. No pretreatment needed for seed germination.

Plant Planting Notes

These shrubs get up to 6 feet wide, so prepare to provide adequate space. Can be planted closer together to create a hedge.

Plants/Diseases

No serious insect or disease issues.

Wildlife Benefits

Nectar/pollen source for pollinating insects

Leaves

The simple opposite leaves are narrowly elliptic-oblong to linear with recurved margins. Approximately 2-3 inches long.

Flowers

The showy, bright yellow flowers are arranged in cymes. Flowers feature 4-5 petals and numerous and prominent anthers.

Fruit

Cone-shaped capsules.

Toxicity

No known toxicity.

USDA Hardiness Zones

3, 4, 5, 6, 7, 8

Light Exposure

Full Sun, Part Sun/Shade

Soil Moisture

Medium, Moist

Soil Drainage

Well-drained

Soil pH

Acidic (less than 6.0)

Native in South Carolina?

Yes

Plant Native Habitat

Bogs, streambanks, dry to moist forests, rock outcrops, moist forests, pine savannas.

Global Conservation Status (NatureServe)

Secure (G5)

Federal Conservation Status (USFWS)

Not Listed

Distribution Notes

Common in Carolina Coastal Plain & NC Mountains, uncommon in Mountains

Ranked as Apparently Secure in SC (S4).

Subspecies

Hypericum densiflorum var. densiflorum
Hypericum densiflorum var. interior