Espostoa are cacti known for their columnar shape, spines, and woolly hair, adapted to arid environments. They require bright light, well-draining soil, and moderate watering, reducing frequency during dormancy. Temperature tolerance is broad, but they prefer warmth with protection from freezing. Challenges include pests like mealybugs and spider mites, and rot from overwatering. Seasonal care varies; they need more water in active growth periods (spring and summer) and less in fall and winter when growth slows.