(Nepeta cataria) Keep your cats happy with their own catnip plants! The plants are not the most exciting plant to look at in the garden, but the leaves (fresh or dried) drive most cats wild with joy. May be grown in a container or planted out in the garden - may need caging to protect plants from rolling and chewing felines. Traditionally used by humans in teas. Plant seeds in warm conditions Most/full sun - 2-3 feet - Perennial - 100+ seeds/pack.