Lathyrus vernus 'Flaccidus'
Adorable even in name, spring vetchling pushes up its pinnate leaves and deep rose-purple pea-flowers quite early in the season, typically mid-April here. A must for the shade garden, where it will self-sow, if you're lucky.
Part to full shade; average, preferably humus-rich soil; 10"x10"; early spring; Zone 5
Propagated from seed; deep 3.5-inch pots