Tephrocactus geometricus is a slow-growing South American cactus recognised for its rounded, geometric segments. These grey-green spheres form small clusters over time and produce delicate pale flowers in warm, bright conditions. Key Characteristics Stem: Distinct rounded segments forming compact clumps. Colour: Grey-green to bluish tones depending on light. Growth Habit: Slow, segmented growth with minimal branching. Seasonality: Most active in spring-summer; very slow in winter. Flowers: Cream to pale pink blooms in warm bright weather. Care Light: Bright light with several hours of sun; ideal on a sunny windowsill. Water: Water sparingly; allow the mix to fully dry between waterings. Humidity: Naturally low humidity plant; keep dry around the body. Temperature: Best at 18-32°C. Protect from frost and cold moisture. Media: Very free-draining cactus mix with added mineral grit. Feeding: Occasional low-nitrogen cactus fertiliser during spring-summer.
