Plant Care Common St. John's Wort

Common St. John's Wort

Also known as

Perforate st john's-wort and Common saint john's wort

Taxonomy

Hypericum perforatum
Hypericum
Hypericaceae
Malpighiales

How to care for Common St. John's Wort

Water

How often to water your Common St. John's Wort

Water needs for Common St. John's Wort
0.5 cups
every 9

Common St. John's Wort needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Common St. John's Wort

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
Light

Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Common St. John's Wort in your home

Light needs and placement for plant Common St. John's Wort: 1ft from a window
1ft or less from
a window

Common St. John's Wort love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Common St. John's Wort does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Common St. John's Wort in your home 🏡.

Nutrients

How to fertilize Common St. John's Wort

Nutrient, fertilizer, and repotting needs for Common St. John's Wort: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Common St. John's Wort after it doubles in size or once a year—whichever comes first.

FAQs
Difficulty Level

Common St. John's Wort is generally considered an easy-to-care-for plant and makes a great choice for beginners!


Water Needs
Sunlight Needs
Toxicity
Soil
Fertilizer
Growth Pattern
Growing Outdoors

Care Summary for Common St. John's Wort

Common St. John's Wort

Common St. John's Wort


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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