Photo by Melody

PlantFiles: Spotted St. Johnswort, Spotted St. John's Wort
Hypericum punctatum

Family: Clusiaceae
Genus: Hypericum (hy-PER-ee-kum) (Info)
Species: punctatum (punk-TAH-tum) (Info)

3 vendors have this plant for sale.


18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Pale Yellow
Bright Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
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:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By melody
Thumbnail #1 of Hypericum punctatum by melody

By creekwalker
Thumbnail #2 of Hypericum punctatum by creekwalker

By creekwalker
Thumbnail #3 of Hypericum punctatum by creekwalker

By creekwalker
Thumbnail #4 of Hypericum punctatum by creekwalker


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive melody On Aug 9, 2005, melody from Benton, KY (Zone 7a) wrote:

Pretty much found everywhere in North America East of the Rockies. This plant likes sunny meadows and grows happily beside goldenrod and similar plants.

The little yellow flowers are easily identified from the other St. John's Worts because they are spotted with tiny specks of a blackish-purple color.

Neutral JodyC On Jan 17, 2005, JodyC from Palmyra, IL (Zone 5b) wrote:

The flowers attract long-tongued and short-tongued bees, including bumblebees and Halictid bees. Beetles and Syrphid flies may also visit the flowers, but they are less effective pollinators. The reward of these insects is the abundant pollen, as the flowers produce no nectar. The caterpillars of the butterfly Strymon melinus (Gray Hairstreak) reportedly eat the seed capsules, while the caterpillars of the moth Nedra ramosula (Gray Half-Spot) feed on the foliage. Mammalian herbivores usually don't consume this plant because the leaves contain hypericin a photosensitive toxin. Light-skinned animals are especially sensitive to this toxin, which can cause the skin to blister in sunlight. It can also cause gastrointestinal irritation.


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

Shirley, Arkansas
Iowa City, Iowa
Benton, Kentucky
Cole Camp, Missouri
Dunellen, New Jersey
Frenchtown, New Jersey

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