Leave it to that horticulturalist extraordinaire, Dan Hinkley, to bring back this fascinating 'Blue Heron' Corydalis (aka Fumewort) from China. Barely a foot tall and wide, this feathery-leafed perennial fares best in cooler garden spots, and may go into early dormancy if it gets too hot or too dry. The deep blue flowers on red stems are plentiful, fragrant, and a bit surreal, so place this beauty in a container planter or hanging basket where people can get a close look at it.