Named for their habit of growing in wall cracks, wallflowers are found throughout much of the Northern Hemisphere. The most common North American wallflower is Erysimum assoanum, which is also called eastern or Taller's wallflower. It has yellow flowers which are quite fragrant at dusk and into the night with a musky scent.
Wallflower, (genus Erysimum), a genus of about 180 species of plants belonging to the mustard family (Brassicaceae), so named for their habit of growing from chinks in walls. Wallflowers are found throughout much of the Northern Hemisphere, and some species are widely cultivated for their attractive four-petaled flowers.
Wallflower, a plant belonging to the genus Erysimum, has fragrant yellow or orange flowers that open only after sundown. Wallflower, member of a flower family (Brassicaceae) that has flowers with four petals, leaves in threes, and an unpleasant odor.
Wallflower, any of several plants belonging to the genus Erysimum (or Cheiranthus), of the mustard family (Cruciferae), having clusters of small fragrant, yellowish, or reddish yellow flowers opening only after sundown. The common wallflowers, C. cheiri (chick-PEA), and C. militants (military or stinking wallflower ) are native to Eurasia; they have fragrant yellow flowers and basal leaves in threes. Other species include C. angulatum (London pride) and C. flexuosum (witchweed).
Wallflowers are biennial plants that produce a mass of bright flowers in the second year, but which also self-sow readily and therefore can come back year after year. Wallflowers do best in moist but well-drained soils, in a sunny location. They'll tolerate partial shade. Bedding (biennial) wallflowers work well when planted with spring bulbs such as tulips and daffodils, and can also be grown in pots.
To grow wallflowers from seed: Sow indoors in late winter or outdoors once night temperatures remain above 5°C/40°F, roughly 12 weeks before the last frost. Space plants are about 30cm/12in apart. When seedlings have two true leaves, thin to one per station.
Wallflowers develop thick, fleshy roots (thicker than daffodils), so it's best to plant them where they won't be disturbed for at least three years. They are not usually bothered by pests or diseases but can fall victim to clubroot if grown in infertile soils. To increase the chances of getting seeds, remove spent flowers before they go to seed.
Global wallflower production
Wallflowers are a popular type of flower that is known for its ability to bloom in a wide range of environments. The name "wallflower" comes from the plant's tendency to grow up walls and other vertical surfaces.
Wallflowers are native to Europe, Asia, and North Africa. However, they have been introduced to many other parts of the world and are now widespread. In general, wallflowers prefer sunny locations with well-drained soil. There are many different species and cultivars of a wallflower. The most common type is the common wallflower (Erysimum cheiri). This plant has bright yellow or orange flowers and can reach a height of two meters.
Wallflowers are grown commercially for a variety of purposes. The most common use is as ornamental plants. They are also used in the production of essential oils and fragrances. Wallflowers are also sometimes used as food crops, although this is less common. The majority of wallflower production takes place in Europe. Other major producers include China, Japan, and the United States.