The Brain Cactus (Echinocactus horizonthalonius) is a rare and unique succulent known for its brain-like shape. Native to Mexico, this cactus has thick, grayish-green skin with deep grooves and spines that make it look like the folds of a brain. This plant grows slowly and stays small, usually only a few inches to a foot tall, making it great for any space. Its rarity makes it a prized addition to any collection. To care for your Brain Cactus, place it in a spot with bright, indirect light. Water it only when the soil is completely dry. It does best in a cactus or succulent soil mix that drains well. Fertilize it lightly during the growing season. With its unique look and easy care, the Brain Cactus is a great choice for both plant collectors and beginners.