Hollow Root (Corydalis Cava) is a perennial herb in the Papaveraceae family with moderate care difficulty. It requires moderate watering and partial shade or full shade light in USDA hardiness zones 6-8. This plant is toxic to cats and dogs — keep it out of reach of pets.

Corydalis cava is a perennial woodland plant native to Europe and western Asia, known for its tuberous rootstock and spring-blooming, long-spurred flowers in various colors.