Plant Care Horehound


About Horehound

White Horehound is a deciduous herb in the mint family that is native to Europe, Asia and Africa. It has naturalized in much of north and south America. Flowers bloom June to September. It prefers full sun in sandy dry soil with an acidic to neutral pH.


Marrubium vulgare

Also known as

White horehound and Common horehound

How to care for Horehound


How often to water your Horehound

Water needs for Horehound
0.5 cups
every 9

Horehound needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Denver, Colorado.

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

Does your plant get direct sunlight?

Select the pot size


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 Horehound in Denver, Colorado

Denver, Colorado

51% Low

Growing Horehound in Denver right now

Light needs for plant Horehound in Denver, Colorado

Plant growth potential is currently low 📉

November 28th, 2021

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

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

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Light needs for plant Horehound in Denver, Colorado

Sunlight intensity will decrease by 29.9% ☀️

November 28th, 2021

Denver is trending towards lower sunlight intensity!

The amount of sunlight in Denver is expected to decrease by 29.9% over the next 2 weeks to an average of 7.9 megajoules of energy per m2 per da…

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Light needs for plant Horehound in Denver, Colorado

Daylight will decrease by 1.2 hours 📉

November 28th, 2021

This month, Denver is getting an average of 10.2 hours of clear sky sunlight per day.

Hours of daylight will decrease by 11.4% over the next two weeks. Your plants will get 9.2 total hours of dayl…

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Finding light for Horehound in your home

Light needs and placement for plant Horehound: 1ft from a window
1ft or less from
a window

Horehound love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Denver, Colorado ⛅.

Horehound does not tolerate low-light 🚫.


How to fertilize Horehound

Nutrient, fertilizer, and repotting needs for Horehound: 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 Horehound after it doubles in size or once a year—whichever comes first.

When to repot Horehound

Nutrient needs for plant Horehound in Denver, Colorado

Is this a good time of year to repot? No ⏳

November 28th, 2021

The growing potential in Denver is very low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to r…

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Difficulty Level

Horehound can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!

Water Needs
Sunlight Needs
Growing Outdoors

Care Summary for Horehound


Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

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

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