Good and vigorous hybrid between two excellent blue species, Corydalis flexuosa and C. elata. This will put on a show in spring into June with lots of vibrant blue, nicely scented flowers on reddish stems which stand above the foliage. Perfect in the shade garden. This will go fairly dormant in the dog days of summer but will start up again in early fall.
One of the very good blue flowered hybrids combining the best traits of Corydalis flexuosa with those of C. elata. We were in China in 2006 and saw both species in a single day in the Wolong Panda area and these hybrids hold a special appeal to us. In the Poppy family, this requires light to bright shade and moist soil where it will make a nice patch. Z5-8.
A fine Corydalis collected by Hinkley in Sichuan and there is speculation that it might be a flexuosa x elata hybrid. Whate we know is that it is an excellent garden plant with loads of light blue flowers which puts on quite the show. Best in light shade or morning sun and moist.
This is perhaps the first of the hybrids to be introduced between Corydalis flexuosa and Corydalis elata and remains one of the best. Scented blue flowers aging to purplish from mid spring to early summer in moist shade to part sun down to zone 6.
A chance seedling in our gardens with some affinity to "Purple Leaf' and other clones out of England. The similarities are such that we were reluctant to clutter the field with another named Corydalis but it is good enough to share so an "unofficial" descriptive is our solution. Purplish new leaves and scented lavender-blue flowers.
Rare little offering from Siberia with very thin creeping rhizomes making a small ferny colony in light shade. One of the last to bloom of the tuberous species, this usually shows its mauve-pink small tubular flowers in May. Loves a woodsy soil which would make a Primrose happy. Very hardy.
A selection by Elizabeth Strangman of Washfield Nursery in England from a collection on Emeishan in Sichuan. This is more vigorous and a better grower than most other forms of C. elata and the tall scented blue flowers are outstanding. This differs from the the more familiar C. flexuosa in that it doesn't take a summer rest. Moist and shade.
Exceedingly rare perennial Corydalis allied to the C. temulifolia 'Chocolate Stars' that is seldom encountered in the trade. This has similar growth habit but perhaps brings a smidge more to the table by having yellow flowers. Plus no one else has it which always counts a lot. Moist but draining.
Choice species (as seen in our shade garden) collected by NW Plant Wunderkind Riz Reyes on Mt Emei in Sichuan. This species is often confused with Corydalis elata in the trade. This selection is quite vigorous with red highlighted new growth and spires of icy blue flowers. Moist.