I found out that catnip is invasive here. 5+ foot tall plants about 3-4 foot diameter. You can dwarf them by growing in a pot. If you let them go to seed outside, they come up everywhere. My chickens won't touch it and I'm always digging plants out of their run.
My male cat likes only crispy, dry catnip. My female prefers only fresh growing tips. Neither of them goes for it on a regular basis.
The growing plant can have a rather strong odor when brushed against.
Cats get high off valerian root as well. Even cats that don't react at all to catnip. I had a cat who didn't react to catnip once and got some root. Every now and then I'd let her play with the root for a bit. It was stored in an airtight container because I can't stand the smell.