Hypericum perforatum

Common St. John's Wort

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Robust perennial herb with yellow flowers and dotted leaves. Known for medicinal properties including mood support and wound healing. Requires full sun exposure to thrive.
yard Kitchen garden plants wb_sunny Sun pets Not pet-safe
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com 2-3 in Out of Stock $28.00 Buy
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Plant Details

Common Name Common St. John's Wort
Family Hypericaceae
Genus Hypericum
Species Perforatum
Origin Europe / North Africa / Western Asia
Blooming Produces bright yellow flowers from June to September.
Leaf Color Medium green with translucent oil glands (dots)
Sunlight Sun
Category Kitchen garden plants
Pet Friendly close No
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Care & Maintenance

terrain
Soil

Well-draining loamy soil, tolerates various pH levels including slightly acidic to alkaline.

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Watering

Keep soil consistently moist but not waterlogged during growing season. Drought tolerant once established.

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Sunlight & Care

Requires full sun for optimal flowering; partial shade acceptable in very hot climates.

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Fertilization

Apply balanced fertilizer monthly during spring and summer growth periods to support robust blooming.

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Pruning

Trim after flowering to maintain shape, remove dead stems, and encourage bushiness for next season.

Pest Control Aphid Caterpillar Hypericum Leaf Beetle Leafhopper

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 4 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
agriculture Harvesting Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

thermostat
Temperature
14° – 90°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
800 – 35000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
150 – 3500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
25% – 60%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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