Pachycarpus comprises tall, columnar cacti native to Mexico and the southwestern United States. This genus requires full sun exposure and thrives on minimal water, showcasing its drought-resistant nature. A well-draining soil mixture suits pachycarpus well, preventing root rot. While generally hardy, pachycarpus may face challenges such as mealybugs, scale insects, and fungal diseases. Seasonal considerations include reduced watering in winter and protection from frost, while ensuring ample sunlight and occasional water during the warmer months.