What are the characteristics of wallflower? A complete guide

The family and genus of wallflower
Wallflower, a perennial herbaceous plant, belongs to the genus Erysimum in the family Brassicaceae.
Other names for wallflower
Wallflower is also called yellow stock, fragrant stock, and wallflower.
The origin of wallflower
Wallflower originated in southern Europe, and was later widely cultivated throughout China; today it is grown on a large scale across the country.
The flower language of wallflower
The flower language of wallflower is maintaining chastity and sincerity in difficult times.
Wallflower's flowering period is from April to May, and it is mostly used for holiday decorations for Women's Day, Labor Day, and Mother's Day, and is also often used for various celebrations and environmental beautification during its flowering period.
The morphological characteristics of wallflower
Wallflower, about 20-60 cm tall, has erect or ascending stems that are branched, and the plant is densely covered with long fine hairs.
The leaves are oblanceolate, about 1.5-7 cm long and about 5-15 mm wide.
It has a raceme inflorescence, with 4 petals that are orange-yellow or yellow-brown and obovate; the flowering period is from April to May, and the fruiting period is from May to June.