Valerian (Valeriana officinalis, Valerianaceae) is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers that bloom in the summer months. Valerian flower extracts were used as a perfume in the sixteenth century.
The non-native Garden Valerian has naturalized in NE Illinois, where it is uncommon (see Distribution Map). It was introduced into North America from Europe as an ornamental and medicinal plant. Habitats consist of soggy thickets and meadows, fens, and roadside ditches. So far, Garden Valerian has not been a problem in Illinois, although in the northeastern states it appears to be more abundant and aggressive, possibly because of the cooler climate and more abundant rainfall in these states.
The non-native Garden Valerian has naturalized in NE Illinois, where it is uncommon (see Distribution Map). It was introduced into North America from Europe as an ornamental and medicinal plant. Habitats consist of soggy thickets and meadows, fens, and roadside ditches. So far, Garden Valerian has not been a problem in Illinois, although in the northeastern states it appears to be more abundant and aggressive, possibly because of the cooler climate and more abundant rainfall in these states.
This interesting plant has attractive foliage and flowers, therefore it is no surprise that it is occasionally cultivated in flower gardens; it is also cultivated in medicinal herb gardens. When the pulverized roots of Garden Valerian are consumed, they exert hypnotic, sedative, and anti-spasmodic effects in the human body. It is thought that neurologically active chemicals in the roots affect the GABA neurotransmitter system and possibly other neurotransmitter systems within the brain to produce these effects. Unlike native Valeriana spp. (Valerian species), Garden Valerian has odd-pinnate leaves (or deeply pinnatifid leaves) from top to bottom. The lower leaves of native Valerian species are either undivided or less so.