Nice columnar or often trailing cactus plants native to Bolivia, Peru, Argentina, Paraguay and Uruguay. Many species grow at altitude in the mountains. Cleistocactus species require plenty of warmth during the summer, good lighting and also good watering when actively growing. Most Cleistocactus species like some peat mixed though the soil mixture. Make sure that drainage is good by mixing in coarse sand, pumice or grit. Keep Cleistocactus dry in winter at a minimum temperature of approximately 10 °C.