Marrubium Species, Horehound

Marrubiumvulgare

Family
Lamiaceae (lay-mee-AY-see-ee)
Genus
Marrubium (ma-ROO-bee-um)
Species
vulgare (vul-GAIR-ee)
Synonym
Marrubium album
Marrubium vulgare subsp. apulum
Marrubium vulgare var. apulum
Marrubium vulgare var. caucasicum
Marrubium vulgare var. gossypinum
Sun Exposure
Full Sun
Foliage
Grown for foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
15-18 in. (38-45 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Herbs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow outdoors in fall
From seed; direct sow after last frost
By simple layering
By serpentine layering
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Hereford, Arizona

Jerome, Arizona

Phoenix, Arizona

Prescott Valley, Arizona

Bonsall, California

Santa Ana, California

Florence, Colorado

Osborne, Kansas

Gold Hill, Oregon

Clarksville, Tennessee

Belton, Texas

De Leon, Texas

Santo, Texas

Wytheville, Virginia

Great Cacapon, West Virginia

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Gardener's Notes:

2
positives
3
neutrals
0
negative
Sort By:
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E
Comanche county, TX (Zone 8a) | August 2012 | positive

Horehound grows wild in certain pockets in my area. Most of what I've seen is growing under trees in fairly deep shade. It is very drough...Read More

B
Coquille, OR | February 2010 | neutral

I want white horehound, Marrubium vulgare, for cough candy-making. Ballota vulgare is BLACK horehound, not used in cough candies. These...Read More

F
Josephine, Arlington, TX (Zone 8a) | December 2006 | neutral

Horehound Ballota vulgare is naturalized in Texas and other States and is considered an invasive plant in Texas.

W
Seward, AK (Zone 3b) | September 2002 | positive

Horehound is a fascinating plant with an unusual gauze-like texture under the leaves and along the stems. The dark green leaves are savoy...Read More

L
Grove City, OH (Zone 6a) | May 2002 | neutral

Leaves are very beautiful white overlaying green. Very fleshy. Plant can grow very big, with stems layering when they touch ground. Suit...Read More

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