Leo Martin wrote: "Non-bulb enthusiast friends who visited Chile have talked about amaryllids growing on the coast in sand a hundred meters or so inland from the sea. Their description sounded like R. advena. Is this likely?" Looking at this page from Chileflora, seems like your answer could be yes. http://chileflora.com/Florachilena/FloraEnglish/… You will note the soil type and elevations. P. Slate