Dicentra spectabilis (now more properly known as Lamprocapnos spectabilis – the change of name from Dicentra happened in 2006) are one of the most photogenic of flowering plants, with their graceful, arching flowers. They are native to woodland margins in the Northern Hemisphere.
Also known as Bleeding Heart, the lyre flower or even Dutchman's trousers, the perennial Dicentra, which has flowers with two planes of symmetry, is part of the Fumariaceae family.
They will grow well in shade, or part shady conditions, so are a good choice to bring spring colour to a darker corner (along with some foxgloves, which will start to flower as the Dicentra reaches its peak).
They grow from about 30cm-120cm and in almost any conditions (although it favours hummus rich soil), and are generally either pink or white – some varieties are available with yellow(ish) leaves.