Native to eastern South Africa, Ledebouria socialis grows in warm, seasonally dry conditions where water moves through the ground quickly. That background explains why the best soil for Silver squill is loose, airy, and fast-draining rather than dense or water-holding.
This species forms small bulbs close to the soil surface, and those bulbs store moisture. A sandy, loamy substrate with some organic matter gives roots oxygen while holding only light, even moisture. Slightly acidic to mildly acidic soil suits its natural preference without needing heavy richness.