Horehound. Marrubium vulgare, Mint Family: ( Lamiaceae ), Horehound. Also called Hoarhound, Common Horehound, White Horehound, Ballota vulgare. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Marrubium vulgare is considered a perennial herb and wildflower, found in wastelands and fields. The stems have a greenish white color. It is a medicinal herb introduced from Europe and it has become naturalized. Horehound takes its name from Horus, the Egyptian god of sky and light. The Egyptian priests called this plant "Seed of Horus", or "Bull�s Blood" and "Eye of the Star." This pungent member of the mint family was initially used to treat the wheezing associated with tuberculosis, as evidenced by herbalist John Gerard and later by Nicolas Culpepper. Today, it�s used to soothe coughs and sore throats. In fact, many popular cough syrups include small amounts of horehound Horehound is similar to Field Mint, except that Field Mint has purplish flowers and narrower leaves. Quick Notes: Height: Spreading up to about 36 inches tall and 45 inches wide. Flowers: White, tiny; up to about � inches long by about � inch in width. Found in whorls in the leaf axils. Flowering Time: April - September. It does not bloom until two years old. Leaves: Gray -green oval with thick veins appearing crinkly, and about 2 - 3� inches long by about 2 - 3 inches in width. Stems: Typical mint family square stems, green - white and covered in woolly hairs. Found: Native of central and western Asia, southern Europe, and northern Africa. This one native species found throughout higher elevations in Arizona. 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) Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Sun Exposure: Full Sun Elevation: 2,500 - 7,500 Feet. Habitat: Dry, sandy, desert grasslands, dry woodlands, pinion pine - scrub oak, disturbed land areas, semi-dry riparian areas, and roadsides. Miscellaneous: Flowering Photos Taken June 18, 2005. Lynx Creek at Prescott, Arizona. Miller Creek, Shrine Of Saint Joseph, Yarnell, Arizona. September 24, 2008.

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