how much sun does a barrel cactus need?

A barrel cactus needs full sun exposure, ideally receiving at least 6 to 8 hours of direct sunlight each day. This helps it thrive and grow healthily, as they are adapted to arid environments with intense sunlight. In less sunny conditions, the cactus may become elongated or weak, indicating insufficient light. Proper sunlight is essential for its overall health and vibrant coloration.