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
every 9
Common St. John's Wort needs 0.5 cups of water every 9 when it doesnāt 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.
Water 0.5 cups every
9
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
a window
Common St. John's Wort love being close to bright, sunny windows š.
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 š«.
Select your region to see how the current weather in your area affects the placement of Common St. John's Wort in your home š”.
Nutrients
How to fertilize Common St. John's Wort
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 itās 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 yearāwhichever comes first.
FAQs
Common St. John's Wort is generally considered an easy-to-care-for plant and makes a great choice for beginners!
Water Needs
Common St. John's Wort prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Common St. John's Wort requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive šŖ. Select your region to see how the current weather in your area affects the placement in your home š”.
Toxicity
Common St. John's Wort is not safe to consume. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.
Soil
Common St. John's Wort does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Common St. John's Wort grows very slowly and doesnāt require added fertilizer. Replacing your plantās potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!
Growth Pattern
Common St. John's Wort grows along the ground and sends out shoots which will spread across the soil.
Growing Outdoors
USDA Hardiness Zone
Common St. John's Wort can be grown outdoors in USDA Hardiness Zones 4a-8b. Find your local hardiness zone here.
Care Summary for 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 4ā pot your plant is in, and that it doesnāt get direct sunlight.
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