Catnip

Cats aren't the only ones who love this perennial herb. Humans do too. Cats are attracted to catnip in both dried and fresh forms. When dried, catnip tends to have a stimulating effect on cats. When cats nibble the fresh leaves, it tends to have a calming effect. A member of the mint family, catnip has been grown in medicinal gardens for centuries. Humans have used it for its calming properties. As an added bonus, this pungent herb repels mosquitoes.