From gardeners standpoint all bulbous Corydalis can be divided into two large groups: woodlanders and steppelanders. Woodland species prefer peaty soil which never dries out completely and a light shade. They must be planted as soon as possible. If tubers look overdried, we recommend you to soak them in water for several hours before planting. Eastern woodlanders from Siberia, Far East, China are more susceptible to drying out than western woodlanders from Europe, Caucasus, Turkey . Corydalis solida cultivars belong to same group. Steppelanders or ‘bulb-belt’ species generally are sun-lovers and need dryer summer conditions . We harvest them annually and keep out of soil in a bulb shed.