Corydalis flexuosa is a species of flowering plant in the genus Corydalis, of the family Papaveraceae. It is a shade-loving perennial originating in woodland and mountainous areas of China. Growing to , in spring it produces masses of bright blue tubular flowers with a white throat. It is summer dormant, meaning that the foliage dies down in summer.
This plant is widely cultivated. It is hardy to USDA zones 5–8.Monrovia: China blue fumewort The cultivars 'Blue Panda' and 'Purple Leaf' have gained the Royal Horticultural Society's Award of Garden Merit.
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