Your cat will love you! This perennial herb is irresistible to cats, but also makes a great addition to summer salads. Catnip plants grow 16"-30" tall, have grey-green foliage, and produce tiny blue flowers. I've found that it makes a nice edible border while deterring garden pests. Interesting fact: the oil contained in Catnip leaves has been found to be an excellent mosquito repellent. Hardy to zone 3. Latin Name: Nepeta Cataria.