Large St. John's Wort

Taxonomy

Scientific name

Hypericum vesiculosum

Genus

Hypericum

Family

Hypericaceae

Order

Malpighiales

How to care for Large St. John's Wort

💦 Water

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

Large 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.

Water 0.5 cups every
9

Does your plant get direct sunlight?

No Yes

Select the pot size

☀️ Light

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

Large 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.

Large 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 Large St. John's Wort in your home 🏡.

🪴 Nutrients

How to fertilize Large St. John's Wort

Nutrient, fertilizer, and repotting needs for Large 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 Large St. John's Wort after it doubles in size or once a year—whichever comes first.

st john’s wort help needed hi all, does anyone know what I can do with my at johns wort? I am applying fungus shield every two weeks, fed it, i have a small garden bed in my home and it’s USDA Zone 9a, like, it’s in a north facing area so there is mostly shady but gets plenty of sun in summer

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💡 FAQs

💦 Water Needs

Large 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

Large 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 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

🐶 🐈 👶 Toxicity

Large 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

Large 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

Large St. John's Wort grows very slowly and doesn’t require added fertilizer. Replacing your plant’s potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!

🌦️ Growing Outdoors

USDA Hardiness Zone
Large St. John's Wort can be grown outdoors in USDA Hardiness Zones 5a-9b. Find your local hardiness zone here.

🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Large St. John's Wort, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.