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)
Sun Exposure: Full Sun
Danger: Handling plant may cause skin irritation or allergic reaction
Bloom Color: White/Near White
Bloom Time: Mid Summer
Foliage: Grown for foliage Herbaceous
Other details: Average Water Needs; Water regularly; do not overwater
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
On Aug 5, 2012, eatmyplants from Comanche county, TX (Zone 8a) wrote:
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 drought tolerant. At this time, the ground is bone dry and it is flourishing. Horehound is easily transplanted by just digging up the roots and replanting (with soil or no soil, doesn't matter, just keep damp until replanting). Cut off all the above ground growth and it will put out all new growth in a fairly short time.
On Sep 3, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:
Horehound is a fascinating plant with an unusual gauze-like texture under the leaves and along the stems. The dark green leaves are savoyed (deeply veined). It can produce a small white flower in summer. Cut back for renewed growth.
In my youth, I recall my father buying horehound candy which was a brown sugar-coated lozenge with a distinctive taste. Whether used in candy or in tea, it is a home remedy for coughs and colds.
On May 6, 2002, lupinelover from Grove City, OH (Zone 6a) wrote:
Leaves are very beautiful white overlaying green. Very fleshy. Plant can grow very big, with stems layering when they touch ground. Suitable for groundcover. Tolerates some foot traffic.
Flowers are white, insignificant.
This plant has been said to grow in the following regions:
Jerome, Arizona Phoenix, Arizona Prescott Valley, Arizona Sierra Vista Southeast, Arizona Bonsall, California Menifee, California Santa Ana, California Florence, Colorado Osborne, Kansas Gold Hill, Oregon Clarksville, Tennessee Belton, Texas De Leon, Texas Wytheville, Virginia Great Cacapon, West Virginia