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Bushy St. Johnswort

Hypericum densiflorum

Family: Clusiaceae
Genus: Hypericum (hy-PER-ee-kum) (Info)
Species: densiflorum (den-see-FLOR-um) (Info)




Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us


36-48 in. (90-120 cm)


36-48 in. (90-120 cm)


USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Bright Yellow

Bloom Time:

Late Spring/Early Summer

Mid Summer




Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


This plant has been said to grow in the following regions:

Red Bank, New Jersey

Ithaca, New York

Andrews, North Carolina

Franklinton, North Carolina

Bucyrus, Ohio

Gardeners' Notes:


On May 21, 2006, joegee from Bucyrus, OH (Zone 6a) wrote:

Bushy St. Johnswort is one of fifty-plus species of St. Johnswort found on the North American continent. According to the USDA, Bushy St. Johnswort is most commonly found down the eastern seaboard and across the gulf states, from Massachusetts south to Georgia, west to Texas. It is classified as endangered in New York state, and threatened in Pennsylvania.

It adapts well to a wide variety of soils, and is one of the first plants to begin greening -- in late January or early February the leaves begin to appear in zone 5b.

The blooms are bright yellow-colored pompom-like inflorescences up to an inch in diameter, similar to dandelion blossoms only more delicate. Bees and insects find these blooms attractive.

This bushy perennial keeps a compact,... read more