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Hypericum perforatum (Perforate St John's wort)

Beginner
skill rating
1 hour care
per year
1m
Max height
0.6m
Max spread
2-5 years
To maturity
Low
Toxicity

Plant details

Botanical name

Hypericum perforatum

Other names

Perforate St John's wort, Penny John, Rosin rose, St Columba's Flower, Klamath weed, Human blood, Devil's flight, Devil's courage, God's wonder plant, Cammock, Common St John's wort, Devil chaser, Herb John

Genus

Hypericum Hypericum

Species

H. perforatum - H. perforatum is an upright, clump-forming, deciduous perennial bearing elliptic, ovate, or linear, mid-green leaves with tiny, translucent dots. Cylindrical cymes of star-shaped, bright yellow flowers bloom in summer.


Hypericum perforatum is: Deciduous

Habit

Clump-forming, Upright

Toxicity

Ingestion may cause severe discomfort.

Flower

Bright-yellow in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn

How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Propagation methods

Division, Seed, Softwood cuttings


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Where to grow

Hypericum perforatum (Perforate St John's wort) will reach a height of 1m and a spread of 0.6m after 2-5 years.

Suggested uses

Banks and Slopes, Beds and borders, Cottage/Informal, Ground Cover, Low Maintenance, Meadow, Wildflower

Cultivation

Plant in well-drained or moist but well-drained soil in sun or partial shade. Suitable for use in a wildflower garden, wildflower meadow, or in a mixed border.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Hypericum perforatum

Other names

Perforate St John's wort, Penny John, Rosin rose, St Columba's Flower, Klamath weed, Human blood, Devil's flight, Devil's courage, God's wonder plant, Cammock, Common St John's wort, Devil chaser, Herb John

Genus

Hypericum Hypericum

Species

H. perforatum - H. perforatum is an upright, clump-forming, deciduous perennial bearing elliptic, ovate, or linear, mid-green leaves with tiny, translucent dots. Cylindrical cymes of star-shaped, bright yellow flowers bloom in summer.

Native to

Europe, Western Asia

Foliage

Deciduous

Habit

Clump-forming, Upright

Toxicity

Ingestion may cause severe discomfort.


Colour

Flower

Bright-yellow in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn


How to care

Watch out for

Pests

Generally pest-free.

Diseases

Generally disease-free.

General care

Propagation methods

Division, Seed, Softwood cuttings


Monthly care advice


Where to grow

Hypericum perforatum (Perforate St John's wort) will reach a height of 1m and a spread of 0.6m after 2-5 years.

Suggested uses

Banks and Slopes, Beds and borders, Cottage/Informal, Ground Cover, Low Maintenance, Meadow, Wildflower

Cultivation

Plant in well-drained or moist but well-drained soil in sun or partial shade. Suitable for use in a wildflower garden, wildflower meadow, or in a mixed border.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Hypericum perforatum

The leaves have translucent glands which give a perforated appearance. It has been used as a herbal treatment for depression, but causes sensitivity to sunlight and there is debate as to whether… read more

There is 1 active discussion about Hypericum perforatum (Perforate St John's wort)

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