Prefers a good loamy soil containing leaf mold. Succeeds in a good open soil but if it is to thrive it needs copious rainfall, high humidity and warmer conditions than are normally found in Britain. Plants are not very hardy in Britain, tolerating temperatures down to about -5°c. They succeed outdoors in the mildest areas in the south and west of the country. They are hardy in Cornwall, southern Ireland etc, where they succeed in woodland gardens.