Growing in habitat conditions where measurable rain can be absent for years, this low-altitude variant relies completely on the daily marine Camanchaca fog that rolls off the Pacific and funnels into the coastal hills. Its main metabolic activity and growth occur during the cool, high-humidity months of late winter and spring when fog condensation on the heavy spines is at its peak. It drops into a deep, defensive dormancy to prevent desiccation during the intense dry heat of mid-summer. In cultivation, it is highly susceptible to root rot; it requires a lean, strictly mineral-dominant substrate (like a mix of 80% pumice and crushed granite) and must be watered with an exceptionally light hand, focusing moisture exclusively on the cool shoulder seasons.