Healing plants are plants that have been used for centuries to treat a variety of ailments. Aloes (5 letters) is a succulent plant with thick leaves that contain a gel-like substance that has been used to treat skin conditions, digestive issues, and even cancer. Valerian (8 letters) is a flowering plant that has been used as a sedative and to treat anxiety and insomnia. Both aloes and valerian have been used in traditional medicine for centuries and are still used today.