Cleistocactus winteri subs. colademononis

Cleistocactus typically don't like direct afternoon sunlight and should be in partial shade through the hottest hours. They can take direct sunlight in the morning and afternoons. A rich, fast-draining cactus mix is ideal. To plant, do this preferably during the warm season. To repot a cacti, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot.

Cleistocactus is propagated usually by grafting or sometime by cuttings, but the cuttings will generally not root. If you remove an offset, remember to let it dry for a week or so, letting the wound heal (cuttings planted to soon easily rot before they can grow roots). Rooting usually occurs within 3-8 weeks.