I bought catnip seeds
at my local hardware store last spring
. It is relatively easy to grow. I started it with my other herbs last spring
and grew it all summer. I "rationed" my cats, and only gave them some clippings a bit at the time because they truly get a little too drunk and rowdy! They really are hilarious to watch!
Look for seeds
whereever you find other herb seeds
. Even try the WalMart- here they have a pretty good selection!