Plant Care Kalm's St. Johns wort

Kalm's St. Johns wort

Taxonomy

Hypericum kalmianum
Hypericum
Hypericaceae
Malpighiales

How to care for Kalm's St. Johns wort

Water

How often to water your Kalm's St. Johns wort

Water needs for Kalm's St. Johns wort
0.5 cups
every 9

Kalm's St. Johns wort needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Los Angeles, California.

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?

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.

Plant care guide for Kalm's St. Johns wort in Los Angeles, California

Los Angeles, California

60% Medium

Growing Kalm's St. Johns wort in Los Angeles right now

Light needs for plant Kalm's St. Johns wort in Los Angeles, California

Plant growth potential is currently low 📉

November 27th, 2021

Sunlight intensity as measured by “net radiation” in Los Angeles is currently low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in deter…

Read more

Light needs for plant Kalm's St. Johns wort in Los Angeles, California

Sunlight intensity will decrease by 24.2% ☀️

November 27th, 2021

Los Angeles is trending towards lower sunlight intensity!

The amount of sunlight in Los Angeles is expected to decrease by 24.2% over the next 2 weeks to an average of 9.9 megajoules of energy per…

Read more

Light needs for plant Kalm's St. Johns wort in Los Angeles, California

Daylight will decrease by 1.0 hours 📉

November 27th, 2021

This month, Los Angeles is getting an average of 10.6 hours of clear sky sunlight per day.

Hours of daylight will decrease by 8.9% over the next two weeks. Your plants will get 9.8 total hours of …

Read more

Finding light for Kalm's St. Johns wort in your home

Light needs and placement for plant Kalm's St. Johns wort: 1ft from a window
1ft or less from
a window

Kalm's St. Johns wort love being close to bright, sunny windows 😎.

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

Kalm's St. Johns wort does not tolerate low light 🚫.

Los Angeles, California currently has medium levels of sunlight intensity, you can help this plant grow by treating it to ample light ☀️.

Nutrients

How to fertilize Kalm's St. Johns wort

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

FAQs
Difficulty Level

Kalm's St. Johns 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 Kalm's St. Johns wort

Kalm's St. Johns wort


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

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

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