The blue torch cactus is a columnar cactus in a color you do not expect: powdery blue-green skin set with golden spines, rising as a single sculptural post that slowly gains height for years. It reads modern and clean in a simple pot.

Treat it like the desert native it is: a very bright window or a sunny porch in summer, a gritty cactus mix, and water only when the soil has been dry for days. Cut watering way back in winter. The blue coloring deepens with strong light.