Perideridia gairdneri subsp. gairdneri

Gairdner's yampah (typical subspecies) is a delicate California native perennial in the carrot family, adapted to moist, seasonally wet meadows and open slopes. It performs best in partial shade with consistently moist, well-drained soil that mirrors its native California habitat. Extremely rare in cultivation, it is best suited for native plant specialists, restoration projects, or ethnobotanical collections.