All Hyeronimiellas develop long necks that must be underground, only the leaves protruding from the soil level. H. aurea is an alpine plant that spends the winter in dormancy under snow. It comes from a cool droughland plateau high in the Andes where it is never warm. Its soil in the wild is a mix of several sizes of sand and a sort of silt. The plants sprout in late spring and receive water during late spring, summer and early autumn, flowering in mid to late summer. Dormancy is from late autumn to midspring. The temperatures in the wild can be deceiving as the bulbs are deep in the soil and under a thick layer of snow. In other words, the envronment is pretty cold but the bulbs may not. In climates like this here (say zone 9-10) the plants only produce foliage and although surviving many years never flower. Alkaline soils and full sun in the wild.
All the best
Alberto

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