Enhanced scanning electron micrograph of Catnip (Nepeta cataria) pollen. Catnip grows throughout North America. Its minty smell is extremely attractive to cats. Tea made from Its leaves and flowering tops has been a folk remedy for bronchitis, colds, diarrhea, fever, chicken pox, colic, headache, and irregular menstruation. It is believed to induce sleep, promote sweating, and alleviate restlessness in children. Nepetalactone present in the leaves acts as a mild sedative and has herbicidal and insect repelling properties.