
(Marrubium peregrinum)

Eastern horehound, White horehound, Wild horehound, Common horehound
Marrubium peregrinum is a perennial herbaceous plant that belongs to the mint family. It has a woody stem and grey-green leaves with a velvety texture. The plant produces small, white or pale pink flowers that bloom in clusters during the summer months.
12-24 inches (30-60 cm)
Horehound requires full sun to partial shade. It can tolerate a wide range of light conditions, but too much shade can lead to leggy growth.
Horehound does not have any specific humidity requirements and can tolerate a wide range of humidity levels.
Horehound does not require much fertilizer. A light application of balanced fertilizer in the spring is sufficient.
Prune back the plant in the spring to encourage bushy growth and remove any dead or damaged stems.
Horehound is generally pest-free, but can be susceptible to spider mites and whiteflies.
8-12 inches (20-30 cm)
Horehound prefers well-draining soil and does not like to be overwatered. Water when the top inch of soil is dry to the touch.
Horehound can tolerate a wide range of temperatures and is hardy in USDA zones 4-9.
Horehound can be grown year-round in USDA zones 8-9, but is typically grown as an annual in cooler climates.
Horehound is relatively easy to grow and is a good choice for beginner gardeners.
4-9
Horehound has been used for centuries as a medicinal herb to treat coughs, colds, and other respiratory ailments.