In which geographically diverse regions, mentioned in relation to thriving temperate conditions, has skirret successfully been cultivated?

New Zealand and Minnesota.

Despite its current low profile in mainstream commerce, the skirret plant demonstrates resilience and adaptability to certain environmental settings. The text notes that it thrives specifically in temperate growing conditions. To illustrate this adaptability across different parts of the world, two distinctly separate geographical locations are cited where the root has been successfully cultivated over time. These areas, representing different continents and climates within the temperate zone, are New Zealand and Minnesota. This successful cultivation in diverse settings underscores its viability as a food source outside of its historical European and Asian centers of production.