There are not enough sky blue flowers in the garden. When Corydalis flexuosa and other selections were introduced from China a few years ago they created quite a stir but that faded as it became obvious that they were finicky growers that usually struggled and faded away.
We brought Corydalis ‘Wildside Blue’ back from England from the garden of Keith Wiley. It’s a fabulous hybrid that will grow in many situations and conditions. The fresh green ferny foliage is topped with masses of tubular blue blooms. It will often rebloom in the fall.